The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.
#15736
A
that
B
it
C
this
D
him
推荐题目
I met several people there, two of _____ being foreigners.
#16561
A
whom 
B
them 
C
who 
D
which
How long _____ to finish your composition? 
#16920
A
will it take you
B
will take you
C
you will take it
D
you will take