. The chickens will provide us _______ feathers, ______ we can make use for cleaning the table and benches.
| A. with; with |
B. with; of which |
| C. of; which |
D. of; from which |
He has been in bed ______ he fell off his bike a week ago.
| A．even if | B．soon after | C．now that | D．ever since |
The time Dr. Wang has devoted _____ the disabled in the past five years is now considered_____of great value.
| A．helping; being | B．helps; to be | C．to helping; to be | D．to helping; being |
-----Are you sure that the party came to ______ power in ______1960s?
-----Yes.
| A．the, the | B．/, the | C．a, the | D．the, / |
Once new difficulties _____ in our new job, we should learn to use our brains to solve them.
| A．rise | B．cause | C．arise | D．raise |
He has written a book_______I have forgotten.
| A．which name | B． which of name | C．whose name | D．the name of whose |