问题
选择题
Cycling is a very useful way, especially in cities _______ bike paths have been built.
A．which
B．that
C．where
D．what
答案
答案：C
搜题请搜索小程序“爱下问搜题”
Cycling is a very useful way, especially in cities _______ bike paths have been built.
A．which
B．that
C．where
D．what
答案：C