1. Look at the feet
2. These are nice photos.
3. Those families are large.
4. There are potatoes.
5. These puppies like to run.
6. My friends visited those countries last year.
7. The keys are in the bag.
8. I often use these dictionaries.
9. There are men in the car.
10. There are nice fish (fishes - если разные виды рыб) in the aquarium.
We could not play tennis…
David couldn’t walk…
Tom couldn’t go
I was very tired, but couldn’t sleep
1.was.....,is. 2.were...., are.