【单项选择题】
You()buy some reference books when you go to college.
A、A.could
B、B.will have to
C、C.must to
D、D.might
A、A.could
B、B.will have to
C、C.must to
D、D.might
A、a good dictionary should be bought B、buying a good dictionary is necessary C、you should buy a good dictionary D、it is necessary that you will buy a good dictionary