The use of Chinese by teachers in ______ English classroom must be restricted because it will decrease _______ time when students are exposed to the English language.
| A．the; / | B．an; / | C．/; the | D．an; the |
In my opinion, no organization can ________United Nations in keeping the word peace.
| A．take place | B．take the place of |
| C．in place of | D．in the place of |
Mary, come here at 7; if not , we shall go to the park ______ you.
| A．except | B．besides | C．except for | D．without |
His father ________ a letter from him since he left without a word .
| A．hasn’t received | B．didn’t get |
| C．didn’t have | D．haven’t heard |
I was just about to leave ______the telephone rang.
| A．while | B．as | C．before | D．when |
— Why don’t you go into the office ,John
—I have ______ my office keys at home.
| A．forgot | B．kept | C．leaving | D．left |