问题
选择题
---Are Mr. and Mrs. Black at home? --- No. ________ of them are at work.
A．Every
B．Each
C．Both
D．All
答案
答案：C
Mr. and Mrs. Black为两个人,both表示两者都。整句理解为：布莱克夫妇在家吗？没有。他们俩都在上班。所以选C。
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---Are Mr. and Mrs. Black at home? --- No. ________ of them are at work.
A．Every
B．Each
C．Both
D．All
答案：C
Mr. and Mrs. Black为两个人,both表示两者都。整句理解为：布莱克夫妇在家吗？没有。他们俩都在上班。所以选C。