He is a difficult person, for he ___________________ about everything.
| A．often complained | B．is always complaining |
| C．complains | D．will complain |
21.Here’s one of the best ways to protect your skin—_____ too much sunshine.
| A．not to absorb | B．not having absorbed |
| C．having not absorbed | D．don’t absorb |
20.There used__________a post office at the corner of the street.
| A．to be | B．to being | C．to have | D．to having |
19.It is ________ who ____________ wrong.
| A．me; me | B．me; is | C．I; am | D．I; is |
18. He urged us to _____ this splendid opportunity to develop our movie industry.
| A．escape | B．grasp | C．ensure | D．Master |
17. I like _____ in the autumn when the weather is clear and bright.
A this B. that C. it D. One