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
—You see，I’m poor in maths，you are not good at English，and...—That’s________we should help each other.
#32001
A
when
B
where
C
how
D
what
---What do you think of my homework? ---Good work，________ a few slight mistakes.
#30647
A
in addition to
B
except
C
as well as
D
apart from
The cost of living in Glasgow is among the lowest in Britain, ______ the quality of life is probably one of the highest.
#33189
A
since
B
when
C
as
D
while
Hard _____ he tried, he failed to catch up with the first runner.
#32786
A
although
B
as
C
while
D
when