单项选择题
The teller of a comic story （）
A．tells it only once B．tells the listener in advance that his story is funny C．doesn't care whether his listeners enjoy it or not D．is very serious when telling it
单项选择题 --I can't see the blackboard very well.--Perhaps you need ______. ( )
单项选择题 ______ do you change the cell for your watch ( )
单项选择题 She decided to give herself ______ the police. ( )
