问题

Don’ t worry. A number of efforts are being made ______ the whole system operating normally.

A:being kept
B:kept
C:keeping
D:to keep;

正确答案是：

同类题型

bout the performance last night I stayed therefor only a while- ________, it turned out the best one I haveever seen

Peter is such a person _____ you mentioned just now.

281. The shop______ its summer stock to be ready for the new winter goods.

we had at the party yesterday!—Yes, and the food was so nice.

.Jim’s father said to him,“I hope you won’t forget what I ______ you to buy.