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
 He promised to do what he ______ sure of _______.
#89211
A
could make; my happy
B
could to make; me happy
C
could make; my happiness
D
could to make; my happiness
My daughter insists ______in this school.
#89449
A
that she would not study
B
studying not
C
that she not study
D
not to study
All the doctors in the hospital insisted that he________ badly wounded and that he ______at once.
#87457
A
should be, be operated on
B
were, must be operated on
C
was, should be operated
D
was ,be operated on