1.the children were playing in the house at 6 o'clock ?
2.john was sitting in the house when tom came ?
3.mary was doing her lessons when the telephone rang ?
4. the teacher was speaking at that moment ?
5. the student was reading when the teacher interrupted him?
6. we were having our dinner when we heard the news?
7. i was writing the letter when my frieng came?
8. the child was crying when i came?
9. mother was cooking when the bell rang?
10. he was driving when we saw him ?​

1) If the plane had left on time, they …would have been (be) in Minsk now. 
2) If they hadn’t walked 40 km, they …would not have been (not / be) exhausted now. 
3) What would have become of us, if I …would have come (come) to you then!' 
4) He would have been scrupulous — if he (can) had been able to… ! 
5) What will be the answer if you (add) …add 17 to 75?
6) If he …practices (practice) every day, he …will become (become) a champion. 
7) She …will help (help) us if we …ask (ask). 
8) If you …had (have) a driving license, you …would get (get) this job.
9) My dog …would (be) 20 years old today if it …were (be) alive. 
10) I … would have visited (visit) Sarah yesterday if I …had known (know) that she was ill.

1. Fred would not agree even if you asked him.

2. If she finds that letter, she’ll show it to you.

3. If I meet him, I will invite him.

4. Would they come if we invited them?

5. Our boss will be very disappointed if you aren’t at the meeting tomorrow.

6. The teacher said, “I’ll begin the lesson as soon as Matt stops talking.”

7. The old gentleman doesn’t go out in winter. He will go out if the weather gets warmer.

8. She’s flying to Cairo tomorrow. She’ll send her family a telegram providing

that she arrives with a delay.

9. If the plane had left on time, they would have been in Minsk now.

10. If they hadn’t walked 40 km, they wouldn't have been exhausted now.

11. He would have been scrupulous — if he had been able to!

12. What is the answer if you add 17 to 75?

13. The evening will be fine, if only we didn't have a storm.

14. You might be of interest to me, if only I had time to waste on you.

15. If you leave at two, you will be there before dark.