It was dark, but I could see a man on the floor, with a rope.
| A．lie, tie up | B．lay, tied up | C．lying, tied up | D．lying, tying up |
Examination compositions, together with most business letters and government reports, are the main situations ____ formal language is used.
| A．in which | B．on which | C．of which | D．for which |
If you don’t keep the meat in the refrigerator on such a hot day, it may ____.
| A．go out | B．go away | C．go off | D．go down |
Doing your homework is a sure way to improve your test scores, and this is especially true ____ it comes to classroom tests.
| A．before | B．since | C．when | D．after |
By the time you arrive home, I ____, so please don’t make any noise when you come in.
| A．shall have been sleeping | B．shall have slept |
| C．shall sleep | D．shall be sleeping |
It’s a bad practice to ____ children much money as a New Year gift.
| A．promise | B．permit | C．admit | D．allow |