单项选择题
Jane:I need to wait for the clerk to come back and make some copies of this paper for me. Ben:Why bother him?I’ll show how easy it is to work the machine. What do we know from the conversation?（）
A.The clerk doesn’t like to be bothered. B.The machine was just repaired. C.Jane can operate the machine. D.Ben can teach Jane to use the machine.
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.
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.
