They had to_________ before they finished the course because they were not well disciplined.
| A．drop in | B．drop out |
| C．drop off | D．drop by |
Winters in ______ north of China are for_____ most part dry and cold.
| A．不填; a | B．the; 不填 | C．不填; 不填 | D．the; the |
Would you likeknife and fork，or would you rather use chopsticks，sir?
| A．the；the | B．a：／ | C．／；the | D．the；the |
—Has the little boy passed P. E. test？
—He has tried twice and the teacher will allow him to have third try.
the；不填 B. a； the C. the； a D. the； the
Although I had read the book assigned by the professor several times , it didn’t make any _____ to me.
| A．meaning | B．importance | C．sense | D．significance |
—Have you known each other for long?
—Not very long, __________ we started to work in the company.
| A．after | B．before | C．when | D．since |