－I wonder if I__________smoke here．
一NO, you . You see，there is a“NO SMOKING”sign here．
| A．may；needn’t | B．must；can’t | C．shall；won’t | D．can；mustn’t |
I don’t like any humor in serious speech because I can’t think of any circumstance _______ this would be beneficial or useful.
| A．where | B．which | C．whether | D．as |
—I’m terribly sorry to have put you through so much trouble.
—____. I know you didn’t mean to.
| A．You’re welcome | B．No trouble |
| C．All right | D．Forget it |
________ had Mike picked up the ball________ another player took it from him.
| A．Hardly; when | B．Not; until |
| C．No sooner; when | D．Not until; when |
If only he________ quietly as the doctor instructed, he would be better now.
| A．lies | B．should lie |
| C．had lain | D．laid |
_______ a report, some 844 animals and plants have disappeared in the last 500 years.
| A．According to | B．Apart from |
| C．In addition to | D．Despite |