问题
单项选择题
When he （）home, he saw his mother cleaning the room.
A. got up
B. got back
C. got off
D. got on
答案
参考答案：B
解析：
get back home表示“回到家”，A、C、D不合句意。
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When he （）home, he saw his mother cleaning the room.
A. got up
B. got back
C. got off
D. got on
参考答案：B
解析：
get back home表示“回到家”，A、C、D不合句意。