1- what are your parents doing?
-(they / watch / tv) they're watching tv
2 - my brother is leaving the house.
-(where/he/go? ) where's he going
3 - who / you / wait / for
-
nobody /l/just sit
4 -have you seen jane?
- yes, she /eat / dinner
5 - your friends / playing football
- no, they're doing homework.
?
6 – the weather / get better
- yes, it is!
7 – where are pam and peter?
-
they / driving / here

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1 - What are your parents doing?
- They are watching TV.
Explanation: The verb "to be" (are) is used to indicate the present continuous tense, which shows an ongoing action at the moment of speaking. "Watching" is the present participle form of the verb "to watch", and it indicates the action being performed by the subject "they" (the parents).

2 - My brother is leaving the house.
- Where is he going?
Explanation: The verb "to be" (is) is used to indicate the present continuous tense, which shows an ongoing action at the moment of speaking. "Leaving" is the present participle form of the verb "to leave", and it indicates the action being performed by the subject "my brother". The question "where is he going?" is asking about the destination or location to which the brother is going.

3 - Who are you waiting for?
- Nobody, just sit.
Explanation: The question "who are you waiting for?" is asking about the person or people for whom the subject (you) is waiting. The answer "nobody, just sit" implies that the subject is not waiting for anyone in particular and should just sit and not expect anyone to arrive.

4 - Have you seen Jane?
- Yes, she is eating dinner.
Explanation: The question "have you seen Jane?" is asking if the subject has had visual contact with Jane. The answer "yes, she is eating dinner" implies that the subject has indeed seen Jane, and she is currently engaged in the action of eating dinner.

5 - Your friends are playing football.
- No, they're doing homework.
Explanation: The verb "to be" (are) is used to indicate the present continuous tense, which shows an ongoing action at the moment of speaking. "Playing" is the present participle form of the verb "to play", and it indicates the action being performed by the subject "your friends". The answer "no, they're doing homework" implies that the subject's friends are not playing football, but are instead engaged in the action of doing homework.

6 - Is the weather getting better?
- Yes, it is!
Explanation: The question "is the weather getting better?" is asking if the condition of the weather is improving. The answer "yes, it is!" confirms that the weather is indeed getting better.

7 - Where are Pam and Peter?
- They are driving here.
Explanation: The verb "to be" (are) is used to indicate the present continuous tense, which shows an ongoing action at the moment of speaking. "Driving" is the present participle form of the verb "to drive", and it indicates the action being performed by the subjects "Pam and Peter". The answer "they are driving here" implies that Pam and Peter are currently on their way in a vehicle to the location from which the question was asked.