问题
选择题
You______have made great progress since two months ago.
A．sure
B．are sure of
C．certain
D．make sure
答案
Ａ
sure 副词，确实，当然。例如：He sure is tall.他的确很高。
搜题请搜索小程序“爱下问搜题”
You______have made great progress since two months ago.
A．sure
B．are sure of
C．certain
D．make sure
Ａ
sure 副词，确实，当然。例如：He sure is tall.他的确很高。
