问题
选择题
My set of keys old, but your keys are new.
A．am
B．is
C．are
D．be
答案
答案：C
本题的主语是复数，故be用are，故本题选C。
搜题请搜索小程序“爱下问搜题”
My set of keys old, but your keys are new.
A．am
B．is
C．are
D．be
答案：C
本题的主语是复数，故be用are，故本题选C。