Can you imagine that a smart man like him_____ make such a stupid mistake?
#88155
A
might
B
should
C
would
D
need
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_______ there yesterday, I could have asked him not to do so．
#87615
A
If I were
B
If I was
C
Had I been
D
Was I
——— Alice looks sad. Did you tell her about the accident? ——— Yes， but I ________ her just before her final exams.
#90414
A
shouldn’t tell
B
shouldn’t have told
C
needn’t tell
D
mustn’t have told
If we had taken such effective measures much earlier, the river ________ so seriously now.
#86813
A
is not polluted
B
would not be polluted
C
had not been polluted
D
would not have been polluted