Since nobody gave him any help, he have done the research on his own.
#86873
A
can
B
must
C
would
D
Need
推荐题目
You would have helped your mother do some housework. But you ____.
#89579
A
don’t
B
didn’t
C
wouldn’t
D
weren’t
--- Where are the students ? How could they keep us waiting for so long? --- They started an hour ago and they____ be here in fifteen minutes, I think.
#90295
A
might
B
would
C
should
D
must
The teacher_____have thought Johnson was worth it or she wouldn’t have wasted time on him,I suppose.
#89086
A
should
B
can
C
would
D
must
It was essential that the application forms ________ back before thedeadline.
#87750
A
must be sent
B
would be sent
C
be sent
D
were sent
— You ought to have called her yesterday . — Yes , I know I ____ .
#89767
A
ought to
B
ought go have
C
ought have done
D
ought to have called