8．　 The moon _____(rise), we returned home.

7．　 That crazy man considered it possible _____(set) back the clock of history.

6．　 Though many measures have been taken to stop pollution, a lot still remains _______ (do).

5．　 _____(fly) back to China, all the staff who had worked in Libya strongly felt that our country is powerful.

4．　 No one can prevent this plan from _____(carry) out.

3．　 They arrived on Monday evening and we got there the _____(follow) day.

2．　 We need to examine all the costs _____(involve) in the project first.

1.　　 It is recommended that the medicine _____(take) twice a day.

10. The ten most ________(频繁)asked questions are listed below.

9．　 He suddenly smiled, ________(露出)a set of amazingly white teeth.