The sun is bigger than the moon we all know it.A. asB. whichC. andD. that

问题补充：

The sun is bigger than the moon, we all know it.

A. as

B. which

C. and

D. that

答案：

A. as

B. which

(答案→)C. and

D. that

解析：此句不缺任何成分，不是定语从句，只能是并列句。