－Where did you go _____ the morning of April 6?－I didn’t come to the office _____ the meeting was over.
#49484
A
in, when
B
at, unless
C
on, until
D
to, though
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— Do you have any problems _______ your English?— No, I don’t. But I have some maths problems _______.
#48341
A
on, to solve
B
with, solving
C
on, solving
D
with, to solve
My father is a doctor．He works _________．
#49435
A
in a hospital
B
in hospital
C
of the hospital
D
at hospital
Can you please spend _____ explaining it _____ us?
#50286
A
sometimes; to
B
some time; to
C
some times; for
D
sometime; for