The old man has three sons，and two _____ are doctors．
#33841
A
of which
B
of whom
C
of them
D
of that
推荐题目
— How long do you think it will be _______ the USA recovers from the losses of the financial crisis?— Perhaps four or five years.
#32402
A
when
B
since
C
that
D
before
I was about to get on the bus ____someone called me from behind.
#33059
A
until
B
whether
C
while
D
when
Some of my workmates prefer to send to our QQ group ______ news they got.
#30165
A
whatever
B
however
C
whichever
D
whenever
I have heard a lot of good things about you I came back from abroad.
#30916
A
since
B
until
C
before
D
when
It’s really very dangerous. One more step, _____the baby will fall into the well.
#30992
A
or
B
so
C
but
D
and