Question

6. Look ! Smoke
............... (come) out of that window.
7. He ............... (want) to buy a scooter.
8. The Principal .............. (speak) to the teachers. You can't meet him at this time.
9. This house ............... (belong) to my uncle. He ............... (build) another
house also.
10. What ............... (happen) in that house ? I .............. (see) a small crowd in front
of it.
11. They ............... (build) a bridge across the river.
12. I ............... (have) a new computer.
13. He ............... (seem) to be sick.
14. The commission .............. (prepare) its report.
15. He is still ............... (sleep) in his room.
The Past Continuous is used for an action continuing at a particular
particular period in the past. The chief interest is not the time of
ontinuity.​

Answer 1

6. came , 7. wanted , 8. is speaking, 9.belongs , built 10. Happened 11.built 12.have 13. Seems 14. Prepared 15. Sleeping

Answer 2

6. Look! Smoke  came (come) out of that window.

• Here we have used "came" because the event has already occurred or had taken place, thus making it a past event.

7. He wanted (want) to buy a scooter.

• Here we have used "wanted" because he has a desire to buy a scooter, which he has thought from earlier.

8. The Principal is speaking (speak) to the teachers. You can't meet him at this time.

• Here we have used "is speaking" because the event is still going on and in the present moment.

9. This house belongs (belong) to my uncle. He built (build) another

house also.

• He has already a house, another house is already been built, so we have used "built" here.

10. What happened (happen) in that house? I  saw (see) a small crowd in front

of it.

• Here we have used "happened and saw" because the event has already occurred or had taken place, thus making it a past event.

11. They built (build) a bridge across the river.

• Here we have used "wanted" because the event has already occurred or had taken place, thus making it a past event.

12. I have (have) a new computer.

• Here we have used "have" because he still has a computer.

13. He seems (seem) to be sick.

• He might be sick.

14. The commission prepared (prepare) its report.

• Here we have used "prepared" because the event has already occurred or had taken place, thus making it a past event.

15. He is still sleeping (sleep) in his room.

• Here we have used "sleeping" because the event is still going on and in the present moment.