Unlike the earth, Mars is too cold and Venus is far too hot _______ there to be any life.
#25693
A
as
B
so
C
like
D
for
推荐题目
 He is always helping people without expecting anything _____.
#26277
A
in common
B
in turn
C
in danger
D
in return
The railway will be opened______traffic___ May 1, 2009. 
#28351
A
to; on
B
to; in
C
by; on
D
for; on
Thank you for your help and I hope I can do something for you_____.
#27264
A
in return
B
in turn
C
in reply
D
by turns