单项选择题
（）is known to us all is that the Chinese government has spared no efforts to protect people from fake food.
A.What B.It C.That D.As
单项选择题 The party was（）great success.We sang and danced until it came to（）end at midnight.
单项选择题 —Has Tom finished his homework yet? —I have no idea;he（）it this morning.
