Up to Tuesday's attack, the worst school shooting in the U. S. was in March 1998 in Jonesboro, two boys, aged 11 and 13, shot and killed a teacher and four girls.

A. while         B. where       C. when        D. then

Anna is often heard ______songs in her room.                            

       A. sung              B. singing           C. sing              D. to sing

_____, she burst into tears.

     A. Deeply moved                        B. Deeply moving

     C. As she deeply moved                   D. As she was deeply moving

I'm afraid I can't make myself _____ in English.

      A. understanding      B. understand         C. to be understood    D. understood

The computer centre, ______ last year is very popular among the students in this school.

      A. open              B. opening           C. having opened     D. opened.

It is no good ______ today's work for tomorrow.

     A. to leave            B. leaving            C. that you leave      D. leave

Mr. White was seen ______ the Palace Museum.

    A. enter              B. to enter            C. entered            D. to entering

I ran too fast ______ where I was going.

     A. to notice        B. for me to notice     C. to notice for me         D. and notice

The pair of shoes                 worn out.

　　       A. was   B. were   C. have been   D. had been

 13Neither he nor I                for the plan.

　　       A. am   B. are   C. is   D. were