(   ) 4. Edison never gave up,          he  failed  many  times.

A. and     B. although

C. or      D. but

(   ) 3. The classroom is so dirty.  You must stop

       litter about.

A. throw     B. throws

C. throwing     D. to throw

(   ) 2.—Who taught her French?

^—        She  learned  it  by  herself.

A. Nobody!B. Anybody!

C. Somebody!D. Everybody!

(   ) 1. There was nothing        her  so.

A. stop; from doing

B. to stop; to doing

C. to stop; from doing

D. stopping ; from doing

5. We should try our best to e       deserts  into forests.

4. None of h        beings  can be free from mistakes.

3. There is a lot of s        on  the beach.

2. A        he got up early,he missed the early train.

1. We should s        the  factory  from polluting the river.

(   ) 5.—Which do you prefer, a CD player or a Walkman?

—          I  prefer  a  portable computer. (2013.十堰）

A. Both.  B. Either.

C. None.  D. Neither.