问题
______ is known to all, the earth travels round the sun once every year
A:That
B:As
C:What
D:It
B:As
C:What
D:It
正确答案是：
同类题型
Alice ________ to see his aunt if she_______free tomorrow.
I________ along the street looking for a place to park when the accident________ .[ ]
Not until ________did he leave.
We finished the run in less than half the time ____[ ]
．______two articles to write today，I have to stay at the classroom to make it