题干
---It is said that China has been a member of WTO since December 11, 2001.
---Well, it’s wonderful that the Chinese people ______ have made so much progress these years.
---Well, it’s wonderful that the Chinese people ______ have made so much progress these years.
A：must
B：ca
C：should
D：may
答案(点此获取答案解析）
A
