单选题 Among the four sentences below, it is sentence ______ that is NOT used as a command.

A、 Be reasonable.
B、 Easy come, easy go.
C、 Somebody open this door.
D、 If anyone shrinks from his action, let him speak now.

【正确答案】 B

【答案解析】祈使句的主语通常为第二人称(you)，但一般都被省略，只有在特殊的情况下才把主语(you)补充出来。例如： Put it on the table. You be quiet. 有时祈使句的主语也可以是everybody，somebody，anybody，nobody等不定代词。例如： Everybody shut their eyes. Nobody move. 有的祈使句通常以let开始，用以第一或第三人称。例如 Let me have a look. Let each man decide for himself.