Tom has two cousins, and ______ are engineers.
#31634
A
both of whom
B
both of them
C
none of them
D
either of them
推荐题目
In the office an electrical engineer is looking through the instructions to know ________ the heat system works before the repair work.
#30344
A
whether
B
why
C
how
D
that
They were surprised that a child should work out the problem____ they themselves could not.
#31497
A
once
B
unless
C
while
D
if
_______ has recently been done to provide more buses for the people, a shortage of public vehicles remains a serious problem.
#79936
A
That
B
What
C
Despite what
D
Though what
29．---- I wonder how much you charge for your services.---- The first two are free ____ the third costs $30.
#79573
A
while
B
until
C
when
D
Before
7．Peter was so excited he received an invitation from his friend to visit Chongqing.
#80665
A
where
B
that
C
why
D
when