—Where is Xiao Wang?  —I don't know.He__________ be in the library.
#90382
A
can
B
must
C
might
D
may
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These achievements_______ without the contribution of Qian Xuesen, a key leader of the New China's nuclear, missile and so on.
#89859
A
would have been unthinkable
B
would not be unthinkable
C
would be unthinkable
D
would not have been unthinkable
.Everyone in the building can hear Tom’s words:“Mother, the window _____.please come to help me.”
#90443
A
can’t be shut
B
will be shut
C
doesn’t be shut
D
won’t be shut