At the end of the meeting, it was announced that an agreement ________.
| A．has been reached | B．had been reached |
| C．has reached | D．had reached |
His failure in the exam suggested that he ______ the teacher’s instructions.
A. can’t have followedB needn’t have followed
C mustn’t have followed D. shouldn’t have followed
Recent studies have discovered that fathers uniquely contribute to the development of their children, _____ in low income families.
| A．specially | B．definitely | C．specifically | D．particularly |
The local authority is trying to ______ oversea investment by beautifying its environment.
| A．value | B．encourage | C．introduce | D．affect |
---Did you wait for him long?
---No, I hadn’t waited long _______ he appeared.
| A．unless | B．until | C．before | D．since |
---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.
| A．must | B．can | C．should | D．may |