The scientists recommend that studies ________ to find out what side effects the medicine might cause.
#86353
A
be done
B
should do
C
will be done
D
are done
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If I were to have time, I            to the theatre tomorrow evening.
#88236
A
would have gone
B
should go
C
had gone
D
were to go
What a pity! Considering his ability and experience, he ___________ it better.
#87501
A
need have done
B
must have done
C
can have done
D
might have done
The whole building _____ burned down, but the heavy rain _____.
#90075
A
might have; would help
B
could have been; helped
C
must have; helped
D
should have been; was helping