There are over 58,000 rocky objects in ______ space, about 900 of which could fall down onto ______ earth.
| A．the; the | B．/; the | C．the; a | D．a; / |
That dog ought to be destroyed ______it attacks any more children.
| A．until | B．since | C．after | D．before |
The library needs __________, but it’ll have to wait until Sunday.
| A．cleaning | B．be cleaned | C．clean | D．being cleaned |
The 1930s __________ the suffering of the Chinese from war.
| A．wrote | B．witnessed | C．proved | D．supplied |
— Could you help me with my English?
— _____________.
| A．It’s nothing | B．Not at all | C．With pleasure | D．It’s my pleasure |
to take my English textbook, I had to borrow one from a schoolmate.
| A．Forget | B．To have forgotten | C．Forgotten | D．Having forgotten |