The one concern for parents and students is ______ if the student pursues their university education in a foreign country, the student will not have the opportunity to establish social contacts in China.
| A.what | B.that | C.whether | D./ | 
Our attitude towards life is________makes the difference between our being happy or not.
| A.that | B.whether | C.what | D.which | 
The hotel wasn't particularly good,but I ________ in many worse hotels.
| A.was staying | B.stayed | 
| C.would stay | D.had stayed | 
—I wonder why Mr Green hasn't showed up at the meeting yet.
 —I'm not sure,but he________in a traffic jam driving here.
| A.could be stuck | B.might have been stuck | 
| C.might be stuck | D.must have been stuck | 
Some drunken drivers think that they may be lucky to________a fine, which may cost their own lives.
| A.get through | B.get along with | 
| C.get down to | D.get away with | 
Great changes________ in the city, and a lot of factories________.
| A.have been taken place; have been set up | 
| B.have taken place; have been set up | 
| C.have taken place; have set up | 
| D.were taken place; were set up |