You'd better write down her phone number before you _____ it.
| A．forget | B．are forgetting |
| C．forgot | D．will forget |
_______ is hard is to do good all one’s life and never do anything bad.
| A．He | B．It | C．That | D．What |
Just because they make more money than I do, _______ they seem to look down on me.
| A．so | B．and | C．but | D．不填 |
I’d like to have visited the Palace Museum last week, but something unexpected _______ to my father.
| A．had happened | B．happened | C．has happened | D．happens |
.－What are you busy with?
－The conference _______ in our city next week.
| A．held | B．will be held | C．be holding | D．to be held |
. You spent ￥300 on a pair of cotton gloves. Such a pair of cotton gloves _____ be worth so much.
| A．mustn’t | B．wouldn’t | C．can’t | D．needn’t |