Bob would have helped us yesterday, but he ________.
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A
was busy
B
is busy
C
had been busy
D
will be busy
推荐题目
The theory he had stuck _______ to be true.
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A
proved
B
to proving
C
to prove
D
to proved
Dad had to cycle to work this morning because his car _______ at the garage.
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A
was repaired
B
was repairing
C
was being repaired
D
would repair
Senior 3 life __________ long-time study and occasional relaxation .
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A
is consisted of
B
consists of
C
is consisting of
D
has been consisted of