— Li Fan won the first prize in the national physics competition. — I ________ he was the winner.
#63178
A
shouldn’t have thought
B
must have thought
C
need have thought
D
could never have thought
推荐题目
The work is too hard for him. He__________ finish it on time.
#77570
A
can't
B
mustn't
C
shouldn't
D
needn't
—   willyoufinishdoingthework?—In a fewweeks.
#76327
A
Howlong
B
How far
C
How soon
D
How often
Without gravity, we _____ walk on the ground as freely as we do now. 
#63085
A
couldn’t
B
mustn’t
C
shan’t
D
needn’t