Mr. Chen his lady has a good command of the English language.A. as well asB. andC. butD

问题补充：

Mr. Chen, his lady, has a good command of the English language.

A. as well as

B. and

C. but

D. as well

答案：

(答案→)A. as well as

B. and

C. but

D. as well

解析：as well as连接的短语常置于第一个主语、宾语、表语或介词短语之后。不影响主语的数。