Chang’e2 did many experiments, ______ I think are of much help for knowing space.
#76050
A
which
B
what
C
when
D
where
推荐题目
is expected that it will be fine tomorrow, when we can do some outdoor activities．
#78497
A
As
B
It
C
That
D
Which
Gun control is a subject ________Americans have argued for a long time,
#77603
A
of which
B
with which
C
into which
D
about which
She opened the handbag but couldn’t find the money _____she was to buy dog food.
#76860
A
for which
B
with which
C
by that
D
of that