Choose the correct options. 1. I listened / was listening to the radio when I heard / was hearing this fantastic song. 2. Helen is wearing / wears blue jeans and a T-shirt today. 3. When the teacher said / was saying Stop!, I still tried / was still trying to finish the last question. 4. I feel really silly! While I danced / was dancing, fell / was falling and / was breaking my elbow. 5. In summer we are going / the beach. 6. Tom / are watching good film at the moment. 7. Tim played / playing computer game when his mum called / was calling him for lunch. 8. I / looking on memory stick when I noticed / was noticing there was virus. 9. Is starting and we are walting wait for the bus in the open air. 10. Ron found was finding really interesting website about dance while he surfed / was surfing the internet. 11.7 My mum had was having breakfast near the computer when she spilled / spilling her cup of coffee on the keyboard. 12. The football match finishes / is finishing and the players are celebrating / celebrate their victory. 13. How many pictures did you take / were you taking while travelled / were travelling around Ireland? did you chat / were you chatting to Philip while I tried / was trying to tell you something really important?

1. I was listening to the radio when I heard this fantastic song.

Explanation: The verb "listen" usually takes the continuous tense ("was listening") to indicate an ongoing action. The verb "hear" is the momentary action of perceiving the song, so the past simple tense ("heard") is more appropriate here.

2. Helen is wearing blue jeans and a T-shirt today.

Explanation: The present continuous tense ("is wearing") is used to describe an action happening at the moment of speaking. Since we are talking about what Helen is wearing today, the present continuous is the correct choice.

3. When the teacher said "Stop!", I still tried to finish the last question.

Explanation: The past simple tense ("said") is used for the momentary action of the teacher saying "Stop!" The verb "try" is an ongoing action, so the past simple tense ("tried") is used to show that it happened during the teacher's command.

4. I feel really silly! While I was dancing, I fell and broke my elbow.

Explanation: The verb "dance" usually takes the continuous tense ("was dancing") to indicate an ongoing action. The verb "fall" and "break" are both momentary actions, so the past simple tense ("fell" and "broke") is used to describe them.

5. In summer, we go to the beach.

Explanation: The verb "go" is a habitual action, so the simple present tense ("go") is used to describe it.

6. Tom is watching a good film at the moment.

Explanation: The present continuous tense ("is watching") is used to describe an action happening at the moment of speaking. Since Tom is watching a film right now, the present continuous is the correct choice.

7. Tim was playing a computer game when his mum called him for lunch.

Explanation: The verb "play" usually takes the continuous tense ("was playing") to indicate an ongoing action. The verb "call" is a momentary action, so the past simple tense ("called") is used to describe it.

8. I was looking at the memory stick when I noticed there was a virus.

Explanation: The verb "look" usually takes the continuous tense ("was looking") to indicate an ongoing action. The verb "notice" is a momentary action, so the past simple tense ("noticed") is used to describe it.

9. It is starting and we are waiting for the bus in the open air.

Explanation: The verb "start" is happening right now, so the simple present tense ("is starting") is used. The verb "wait" is an ongoing action, so the present continuous tense ("are waiting") is used.

10. Ron found a really interesting website about dance while he was surfing the internet.

Explanation: The verb "find" is a momentary action, so the past simple tense ("found") is used. The verb "surf" is an ongoing action, so the past continuous tense ("was surfing") is used.

11. My mum was having breakfast near the computer when she spilled her cup of coffee on the keyboard.

Explanation: The verb "have" is an ongoing action, so the past continuous tense ("was having") is used. The verb "spill" is a momentary action, so the past simple tense ("spilled") is used.

12. The football match is finishing, and the players are celebrating their victory.

Explanation: The verb "finish" is happening right now, so the present continuous tense ("is finishing") is used. The verb "celebrate" is an ongoing action, so the present continuous tense ("are celebrating") is used.

13. How many pictures did you take while you were traveling around Ireland? Were you chatting to Philip while I was trying to tell you something really important?

Explanation: The verb "take" is a momentary action, so the past simple tense ("did you take") is used. The verb "travel" is an ongoing action, so the past continuous tense ("were you traveling") is used. The verb "chat" is an ongoing action, so the past continuous tense ("were you chatting") is used. The verb "try" is an ongoing action, so the past continuous tense ("was trying") is used.