Most birds find it safe to sleep in the trees, but ______ they have eggs or young chicks, they don’t use a nest.
#33314
A
why
B
how
C
where
D
unless
推荐题目
---The vase cost me almost 100 yuan. ---Well, it was crazy of you to spend so much money _____you could buy a much cheaper one.
#80166
A
while
B
if
C
because
D
when
It is said that by 2010 there will be ______530 million tourists entering Tibet each year.
#31848
A
as many as
B
as much as
C
as more as
D
many than
.My reaction towards my classmates at the party was so cold and emotionless ____ I had never been interested in them.
#34036
A
as
B
that
C
as if
D
as to
____ red is a symbol of warmth, it can sometimes make people feel uneasy or even frightened.
#32629
A
As
B
Since
C
If
D
While