people here often __to shanghai. A.take underground B.take the undergroud C.by undergroud D.by the

Question

D. by the underground
A.take underground
B.take the undergroud
C.by undergroud
D.by theunderground

Answer 1

A。

take underground在这里就等于go to sp. by underground，表示一种方式，不需要冠词the，没有所指。
如果选C，那么句子就没有了谓语。

参考资料：数学爱好者4团

Answer 2

B