Question

---Are Mr. and Mrs. Black at home? --- No. ________ of them are at work. A．Every...

---Are Mr. and Mrs. Black at home? --- No. ________ of them are at work. A．Every B．Each C．Both D．All

Answer 1

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。