单项选择题
The sun heats the earth,（）is very important to living things.
A.that
B.what
C.which
点击查看答案&解析
相关考题
-
单项选择题
All the team members tried their best. We lost the game,（）
A.as
B.therefore
C.however -
单项选择题
It is very convenient（） here.
A.living
B.to live
C.live -
单项选择题
Ancient Greece is the（）of western civilization.
A.sorces
B.source
C.origin
