A-A+
Not only the switches but also the old wiring
问题详情
Not only the switches but also the old wiring ______ changed.
A. have
B. are
C. have been
D. has been
参考答案
正确答案：D
13．遇到 not only … but also的句型时，谓语动词的单复数与靠近它的名词一致。Old wiring是单数，谓语动词为单数。选项 D 是正确的。句子大意：不光是开关，就连旧的线也换了
