Chia dạng đúng của động từ

1. The contracts signed by the company (have) …………been voided because some stipulations were not met.

2. Ten miles (be) ………. a very long distance for us to walk.

3. Each package that is not properly wrapped (have) ………. . to be returned to the sender.

4. The keys of the house (have) ………. been lost.

5. The plan as well as the proposals (be) ………. . to be presented in the coming Monday meeting.

6. The box of ribbons for the electric typewriter (have) ………. . been misplaced.

7. It is disconcerting to believe that every possible candidate (have) ……. . been rejected for one reason or another.

8. There (have) ………. been more excitement in this city about a sporting event.

9. To me, Mathematics (be) ………something very easy to master.

10. If nobody (have) ………. . bought that car from the dealer, then you should return and make another offer.