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1 is there a large building in that square
Are there various methods of research in their lab.
Are there  four dining-rooms in the main building of the University.
Are some parents  always angry with their children.
Is his friend a smart software engineer
2  is there a large or a small building in that square
Are there various methods of research in their or our lab.
Are there  four or three dining-rooms in the main building of the University.
Are some parents  always angry or kind with their children.
Is his or her friend a smart software engineer

3 There is a large building in that squarу, isn't it?
There are various methods of research in their lab, aren't they?
There are four dining-rooms in the main building of the University aren't they?
Some parents are always angry with their children, aren't they?
His friend is a smart software engineer, isn't he?
4 where is a large duilding?
what are in their lab?
how many dining rooms are there in the main building of the University?
Who are always angry with their children?
Who is his friend?

1. I (was) late for my flight because I (had parked) in the wrong terminal.
2. Your boss (has called) three times this morning.
3. It often (rains) in autumn.
4. Someone stole their hand luggage when they (were waiting) in the queue.
5. Jess was exhausted because she (had been waiting) for three hours for her flight.
6. He'll be here soon. He has just (left).
7. Take your umbrella in case it (rains).
8. Daisy had already (left) the airport when she (realized) she had the wrong suitcase.
9. My flight arrived late because it (had not taken off) on time.
10. After I (had picked up) my luggage I (took) a taxi to my hotel.
11. My mother couldn't move her legs because she (had been sitting) down for so long.
12. I (have beeen shopping) all morning. I'm exhausted.
13. I can't go for a walk. I (am helping) my mother.
14. Water (freezes) at 0°C.
15. When I (was walking) in the park the ducks (were swimming) in the pond and some children (were playing) football.