6. Complete the gaps with the correct form of could. . 1) When Cholpon was five, she could read and write. 2) Ainura go sightseeing because she twisted her ankle. 3) He win the match because he was ill. 4) My brother is very talented. He paint very well when he was just eleven. 5) you go to school without your uniform when you were at elementary school? 6) I was very sick yesterday. I eat anything. 7) I'm very tired because I sleep well last night. 8) you solve math problems quickly when you were in the sixth grade? 9) A: When he walk? B: At the age of twelve months. 10) Ancient people use electricity. 2. Had to, didn't have to

1) When Cholpon was five, she could read and write.
Explanation: This sentence is talking about an ability that Cholpon had when she was five years old - the ability to read and write.

2) Ainura couldn't go sightseeing because she twisted her ankle.
Explanation: This sentence is explaining the reason why Ainura couldn't go sightseeing - because she twisted her ankle. "Couldn't" is the negative form of "could" and is used to show a lack of ability or an inability to do something.

3) He couldn't win the match because he was ill.
Explanation: This sentence is explaining the reason why he couldn't win the match - because he was ill. "Couldn't" is used to show a lack of ability or an inability to do something.

4) My brother is very talented. He could paint very well when he was just eleven.
Explanation: This sentence is talking about an ability that the speaker's brother had when he was eleven years old - the ability to paint very well.

5) Could you go to school without your uniform when you were at elementary school?
Explanation: This sentence is asking about the possibility of going to school without a uniform when the person was in elementary school. "Could" is used to ask if it was possible or allowed to do something.

6) I was very sick yesterday. I couldn't eat anything.
Explanation: This sentence is talking about an inability to eat anything because the person was very sick.

7) I'm very tired because I didn't sleep well last night.
Explanation: This sentence is explaining the reason for feeling tired - not getting enough sleep last night. "Didn't" is the negative form of "did" and is used to show the absence of an action.

8) Could you solve math problems quickly when you were in the sixth grade?
Explanation: This sentence is asking if it was possible to solve math problems quickly when the person was in the sixth grade. "Could" is used to ask about ability or possibility.

9) A: When did he start walking? B: At the age of twelve months.
Explanation: This is a dialogue where person A is asking when someone started walking and person B is providing the answer. "Did" is the past tense of "do" and is used to form questions and negatives in the past tense.

10) Ancient people didn't have to use electricity.
Explanation: This sentence is stating that ancient people didn't need to use electricity. "Didn't have to" is used to show the absence of a requirement or obligation.