1. The children are very quiet. Go and see what they ____________________________ (do). 2. It ____________________________ (be) very cold this year. I wonder when it is going to get warmer. 3. Cuckoos _________________________...

1. The children are very quiet. Go and see what they ____________________________ (do). 2. It ____________________________ (be) very cold this year. I wonder when it is going to get warmer. 3. Cuckoos ____________________________ (not build) nests. They use the nests of other birds. 4. Shakespeare ____________________________ (write) a lot of plays. 5. If he worked more slowly he ____________________________ (not make) so many mistakes. 6. I ____________________________ (wait) for you when you come out. 7. The airplane in which the football team ____________________________ (travel) crashed soon after taking off. 8. If you think it over you ____________________________ (see) that I am right. 9. Rome ____________________________ (be captured) by her enemies if the geese hadn’t cackled. 10. When I ____________________________ (be) here for a year I’ll ask for a rise.