We knock _____people’s doors, and they usually give us some candy _____ a treat.
A. on, to B, at, to C. on, as D. on, on
You may watch TV this evening, _____ you must finish your homework first.
| A．so | B．or | C．and | D．but |
You need ________ fit.
| A．exercise keeping | B．to exercise to keep |
| C．exercising keeping | D．to exercise keeping |
Walking there more time than driving there.
| A．takes | B．costs | C．has | D．will be |
When the man walked _______ the library, he found a cat at the corner.
| A．pass | B．past | C．passed | D．by |
—I will give you some nice picture books.
—Good. The _______, the ________.
A more; better B many; good
C most; best D much; worse