Only after he had spent several nights working on the math problem _______ to wonder whether the problem was wrongly set.
#83053
A
that he began
B
did he begin
C
then he began
D
so that he began
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Believe it or not, _____ did I hear it, but also saw it.
#82194
A
as well
B
not only
C
never before
D
only if
__________you were coming today, I’d have met you at the railway station.
#80983
A
Have I known
B
Had I known
C
I have known
D
I had known
So absorbed in our talk that my brother took a wrong turn on the way to the airport.
#81446
A
he wat
B
is he
C
was he
D
he is
______ the teacher has given permission, ______allowed to use the equipment in the lab.
#80828
A
Only if, are the students
B
If only, the students are
C
If only, are the students
D
Only if the students are
一Kurt stayed up for three days preparing for the exam and finally fell ill．一So ．I dare say if you overworked for several days in a row.
#81484
A
would you
B
will you
C
you would have
D
you will