---Someone’s been here. Who ___ it be? It looks like Helen.---It ___ be Helen.She is ill in hospital.
#88920
A
must; must
B
might; could
C
can; mustn’t
D
can; can’t
推荐题目
You are wet through. You ___________ in the rain.  
#87522
A
must come
B
must have forgotten
C
may catch
D
must have got caught
______ smoking, he would not have got cancer in the lung.
#90517
A
Was he given up
B
Had he given up
C
Did he give
D
If he gave up
But for those interruptions, the meeting _____ half an hour ago.
#86655
A
was finished
B
would have finished
C
would finish
D
had been finished