（    ）16．There are ________students waiting in the hall,

      A．hundreds of; aren't they                           B．four hundred; aren't they

C．four hundreds;  aren't there                     D．hundreds of; aren't there

（    ）15．Why not change to CCTV-2? There is________ on.

      A．important something                             B．important any-thing

      C．something important                         D．anything important

（    ）14．She is wearing a dress _______silk.

A．made from           B．made of                    C．make from         D．make of

（    ）13．Jenny went out of the classroom ________saying a word. She was really angry.

A．with                B．not                  C．without            D．not

（    ）12．You must tell me the answer _________the question before they come.

      A．of                 B．for                  C．to                   D．from

（    ）11．What can we cover the roof __________? The rain is too heavy.

      A．in               B．with                 C．on                  D．for

（    ）10．I saw some boys ___________ soccer on the playground.

      A．are playing          B．to play                C．played                D．playing

（    ）9．He didn't go home _______ he finished his homework.

      A．when                    B．if                          C．until                    D．that

（    ）8．Don't be careless, or you will _______ the horse. It's very dangerous.

A．fall down           B．fall off                C．fall into              D．get off

（    ）7．______ I was doing my homework, my mother was cooking dinner for us.

A．What                B．While                C．Because of          D．Then