Children _______ sit in the front seat of a car. It’s too dangerous.
#36775
A
need
B
needn’t
C
must
D
mustn’t
推荐题目
British Prince William(威廉王子) and Kate _________ for nearly two months.
#42127
A
married
B
have married
C
have been married
D
have got married
—Why didn’t you go to the movie yesterday? —Because I_________it before. 
#42506
A
had watched
B
have seen
C
have watched
D
had seen