— It _______ be Jack who is in the office.— No, it _______ be him. I saw him off at the airport half an hour ago.
#89500
A
can’t ; can’t
B
must; can’t
C
must; mustn’t
D
may; mustn’t
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---Be careful! Your clothes will catch fire. ---Thank you._______ so close to the fire.
#87970
A
I didn’t know I was
B
I don’t know I am
C
I hadn’t known I was
D
I don’t know I was
—How I wish I had studied harder when I was in senior school! —If you had，you ________ a university student now.
#86900
A
are
B
would be
C
should
D
were
But for the traffic jam,we long ago.
#89671
A
will have arrived
B
should
C
had arrived
D
would have arrived
He ______. It's a shame my mobile phone was power-off.
#90420
A
ought to call me
B
could have called me
C
may be calling me
D
might call me