Question

________ Mary ________ Sue knows nothing about the matter, ________ they didn’t come to school yesterday．

[　　]

A．Either; or; because

B．Both; and; as

C．Neither; nor; since

D．Not only; but; for

Answer 1

答案：D
解析：

both…and…连接并列主语时，谓语应用复数，由第二个空后的knows可知B项错误；从后面的原因知道昨天她们没来上学，其结果当然是对那事一无所知，因此答案为D项。