题目内容
17．Why can't Betty go on a trip next week？A．Because she has to look after her mother．
B．Because she has to look after her sister．
C．Because her sister tells her to stay at home．
分析 略
解答 B
点评 略
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相关题目
A．Because she has to look after her mother．
B．Because she has to look after her sister．
C．Because her sister tells her to stay at home．
