Я думаю, так:
1. use ; are used
2. is often eaten; often eat
3. was written; wrote
4. Was being prepared; was preparing
5. Are building; are being built
6.had been eaten; had eaten
7. Are going to be put; are going to put
8. Can make; can be made
9.were being cleaned; were cleaning
10. Was cooked; cooked
Я думаю, так:
1. use ; are used
2. is often eaten; often eat
3. was written; wrote
4. Was being prepared; was preparing
5. Are building; are being built
6.had been eaten; had eaten
7. Are going to be put; are going to put
8. Can make; can be made
9.were being cleaned; were cleaning
10. Was cooked; cooked