问题
选择题
–Do you think Professor Smith_________be in the lab?
--I’m not sure.
A．must
B．shall
C．need
D．can
答案
答案：D
搜题请搜索小程序“爱下问搜题”
–Do you think Professor Smith_________be in the lab?
--I’m not sure.
A．must
B．shall
C．need
D．can
答案：D