—What is the population of China?
—China has____population of l．3 billion．
A．the；the B．a；a C．a；the D the；a
______ __ a reply, he decided to send another e-mail.
| A．Not receiving | B．Receiving not |
| C．Not having received | D．Having not received |
You should understand the traffic rule by now. You’ve had it ________ often enough.
| A．explaining | B．to explain | C．explain | D．explained |
When ________ imported goods，people are ________ about all the different labels on food these days.
| A．choosing；confused | B．choosing；confusing |
| C．chosen；frightening | D．choosing；frightened |
What he said just now _____ me of that American professor.
| A．accused | B．reminded | C．informed | D．memorized |
When copying the paper，be careful not to ________ a single word.
| A．leave out | B．come out | C．begin with | D．come up |