Tom Mary speaks good Chinese so they can communicate with these Chinese students very w

问题补充：

Tom Mary speaks good Chinese, so they can communicate with these Chinese students very well.

A. Neither; nor

B. Not only; but also

C. Both; and

D. Either; or

答案：

A. Neither; nor

(答案→)B. Not only; but also

C. Both; and

D. Either; or

解析：Neither; nor既不，也不；Not only; but also不但，而且；Both; and两者都；Either; or或者，或者。句意：Tom和Mary汉语都讲得很好，所以他们能和中国学生很好的交流。B和D在意思上都对，但是Both; and在连接两个并列主语是谓语用复数，可句子用的是speaks，所以选B。