Question

(北京市2004)

When he ________ home, he saw his mother cleaning the room.

[　　]

A．got up

B．got back

C．got off

D．got on

Answer 1

答案：B
解析：

解析：get up意为“起床”；get back意为“回来”；get off意为“下车”；get on意为“上车”。由句意“他回到家时，看到他妈妈正在打扫房间。”可知应填got back，故选B。