Would you like to have a picnic?I'd love to.But my mother isn't().I have to look after my brother.A.out B.in C.at D.for选择答案并解释原因

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Would you like to have a picnic?I'd love to.But my mother isn't().I have to look after my brother.A.out B.in C.at D.for选择答案并解释原因

Would you like to have a picnic?I'd love to.But my mother isn't().I have to look after my brother.A.out B.in C.at D.for选择答案并解释原因
Would you like to have a picnic?I'd love to.But my mother isn't().I have to look after my brother.
A.out B.in C.at D.for选择答案并解释原因

Would you like to have a picnic?I'd love to.But my mother isn't().I have to look after my brother.A.out B.in C.at D.for选择答案并解释原因
B
分析 be in = be at home 在家
加油!不明白再问!

答案选 B. in

“我母亲不在” , 我必须照顾我弟弟。

因为空格后面没有其他单词,所以选 in。(暗示 “没在家中”)
如果后面有 home 就该选 at (at home 更明确地表达 不在“家”)