The World Expo 2010 is being held at a time the world is looking for a new kind of balance between nature and cities．
#69967
A
when
B
where
C
which
D
that
推荐题目
When different cultures, we often pay attention only to the differences without noticing the similarities.
#68209
A
compared
B
being compared
C
to compare
D
comparing
In my opinion, you’d better eat and sleep more _________ lose any more weight.
#69844
A
so as to
B
in order not to
C
to not
D
so that not to
A number of high buildings have arisen ______ there was nothing a year ago.
#67919
A
when
B
where
C
before
D
until
His younger sister may already be in high school now, in ________ case this picture book is too childish for her.
#66784
A
that
B
which
C
whose
D
what