—Isn't it hard to drive downtown to work?
—Yes，that's why I________to work by train.
| A．have been going | B．have gone |
| C．was going | D．will have gone |
_______the thick clouds, you would find the kite in the sky easily.
| A．Had it not been for | B．If it were not |
| C．If it had not been for | D．Were it not for |
—What about the student in your class, Mr. Wang?
—The doctor said that sleep caused him poor memory and poor concentration.
| A．lacking of | B．lacked in | C．lacking | D．lack for |
To avoid on how to use the word, you’d better refer to a dictionary.
| A．to get confused | B．getting confused |
| C．to get confusing | D．getting confusing |
There is a shortage of teachers in Western China, and it will fall on the 80s and 90s generations to this responsibility.
| A．take on | B．step up | C．make up | D．apply for |
Only when he told me________what trouble he was in.
| A．did I realize | B．I realized | C．do I realize | D．I realize |