--- Will Helen get disappointed if I tell her she failed?

   --- I think she         .

       A．may  B．has to       C．should      D．need

—______ I lock the lab before I go home?
—Don’t bother. I’ll check it myself later.
A. May   B. Must          C. Can           D. Shall

—Hi, Johnson, any idea where Susan is ?

   —It’s class time, so she          in the classroom now.

   A. can be                              B. must have been         C. might have been        D. must be

It’s a pity that you         leave so soon. It’s been so nice having you here.

   A. should                 B. could              C. can              D. might

Curious about the world around them, children         ask their parents endless questions.

       A．can   B．may  C．shall  D．will

Retired French soccer player Zidane said that he          happy to do something for children.

 A. must be          B. would be          C. could be        D. should be

The hotel turned us down because we didn’t make reservations, but we ______ have.

A. might                   B. can               C. must                   D. should

— Why don’t you stay a little longer？

    — ______, but I really should be on my way.

A. I wish I could    B. That’s too bad     C. Forget about it      D. It is my pleasure

—Hi, Johnson, any idea where Susan is ?

   —It’s class time, so she          in the classroom now.

   A. can be                              B. must have been         C. might have been        D. must be

It’s a pity that you         leave so soon. It’s been so nice having you here.

   A. should                 B. could              C. can              D. might