问题
选择题
He warmly congratulated them on _____ they had achieved in science and technology.
A．that
B．where
C．what
D．which
答案
答案：C
搜题请搜索小程序“爱下问搜题”
He warmly congratulated them on _____ they had achieved in science and technology.
A．that
B．where
C．what
D．which
答案：C