——Who       it be that is knocking at the door?——It       be Father, but I’m not sure. 
#85013
A
can; must
B
can; may
C
must; can
D
may; must
推荐题目
It was only with the help of the local guide ______.  
#85357
A
that was the mountain climber saved  
B
when the mountain climber was saved
C
when the mountain climber was saved
D
that the mountain climber was saved
I really don’t know ___ ___I kept the secret papers.
#85213
A
where was it
B
it was where that
C
where it was that
D
where was it that
_________ you met with such a strange man yesterday?
#85194
A
Where it was that
B
Who it was that
C
Where was it that
D
Where was that