Something ______ to end the strike.

[    ]

　　A. must do   B. may do   C. must to do   D. must be done

Your exercises ______ before Monday.

[    ]

　　A. must be finish   B. must be finished

　　C. must finished    D. must be finished not

Something must ______ to make the river clean.

[    ]

　　A. be do   B. done   C. be done   D. be to do

Big waterfall (n. 瀑布) ____ to produce electricity (发电) for the wholetown nearby.

[    ]

　　A. can be used   B. be used   C. are used   D. being used

[    ]

　　A. can be changed   B. changed

　　C. are changing　　 D. were changed

I was worried ______ my father was late.

[    ]

　　A. because   B. though   C. since   D. that

Buses and cars ______ coming and going busily.

[    ]

　　A. can often see　　  B. can be often seen

　　C. can often be seen  D. can be saw often

Give her the letter ______ she comes.

[    ]

　　A. when   B. while   C. until   D. since

This water ______ by the children.

[    ]

　　A. can't be drank   B. can't be drink

　　C. can't be drunk   D. can't drink

A meeting ______ in the meeting room tomorrow morning.

[    ]

　　A. will be held   B. will be have

　　C. will hold　　  D. will be opened