When products made in factories _____, they are thrown away as garbage.
| A．come to an end | B．are put to use |
| C．are used up | D．wear out |
There is no light in the room. They must have gone to the lecture.__________?
| A．didn’t they | B．haven’t they | C．don’t they | D．mustn’t they |
If you keep on your research, you’ll find out the result _______.
| A．in time | B．at no time | C．on time | D．at the same time |
A reading room is _______ you can read newspapers and magazines as well as books.
| A．in which | B．that | C．where | D．place |
The beach is _________ walking distance of my house.
| A．at | B．within | C．for | D．to |
I said we’d be there by seven. Do you think we’ll ________ it?
| A．take | B．forget | C．manage | D．foot |