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 was at home, I would have phoned him then.
#86596
A
Had I known
B
I had known
C
Would I know
D
I would know
Had I hurried, I        the tram.
#87822
A
ould catch
B
ould catch
C
ould have caught
D
ad caught
— Has Tim started? He said he would join in the party.— He ____.He is a man of keeping his word.
#88048
A
could have left
B
must have left
C
can’t come
D
won’t be coming