—Where is Bob? I cannot find him anywhere.—He       have been off long. I heard him make a call just now.
#90189
A
shouldn’t
B
can’t
C
mustn’t
D
needn’t
推荐题目
______ smoking, he would not have got cancer in the lung.
#90517
A
Was he given up
B
Had he given up
C
Did he give
D
If he gave up
The patient insisted that he _______ ill and _______ to the hospital.
#88179
A
wasn’t, wasn’t sent
B
wasn’t, shouldn’t be sent
C
shouldn’t be, wasn’t sent
D
shouldn’t be, shouldn’t be sent