--Do you mind if I take the seat next to yours?

    --________________. It hasn’t been taken yet.

A. Better not.               B. Yes, I do.     

 C. Of course not.            D. No, I’m afraid not.

He hasn’t been here     the evening of March 1^st.

A．until             B．since             C．in               D．on

 We only heard about the meeting yesterday, so it ______ yet.

   A. didn’t prepare                  B. hasn’t prepared   

C. wasn’t prepared                D. hasn’t been prepared

 We only heard about the meeting yesterday, so it ______ yet.

   A. didn’t prepare                  B. hasn’t prepared   

C. wasn’t prepared                D. hasn’t been prepared

He hasn’t been here     the evening of March 1^st.