单项选择题

He is said to （） the old couple for more than ten years.

A．have looking after
B．be looking after
C．look for
D．have been looking after

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单项选择题
It was not until midnight （） home.

A．did he come back
B．that he came back
C．when he came back
D．that did he come back
单项选择题
下列四个选项中最符合原文的选项为（）

A．walks
B．exercises
C．trips
D．housework
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