13、Last summer I took a course on　　　 .

A、how to make dresses　 B、how dressed be made　　

C、how to be made dresses　　　 D、how dresses to be made

12、They　　 on the program for almost one week before I joined them,and now we　　 it as no good results have come out so far.

A、had been working;are still working　　　　　 B、had worked;were still working

C、have been working;have worked　　　　　　 D、have worked;are still working

11、　　　 in the mountains for a week,the two students were finally saved by the local police.

A、Having lost　　 B、Lost　　　 C、Being lost　　 D、losing

10、All things　　　 ,the planned trip will have to be called off.

A、considered　　 B、be considered　　 C、considering　　 D、having considered

9、”I hope the dialogue,”said the spokesman,”　　　 between the two presidents next week will give us some active signals.”

A、making　　 B、to make　　 C、to be made　　　　 D、made

8、Zhang Hong is said　　 by heart 2000 words up to now.

A、that she has learned　　 B、to have learned　　　 C、to learn　　　 D、having learned

7、　　　 we humans are alone in the universe,scientists have scanned the sky for outer space signals and sent messages out into space.

A、We wonder if　　 B、Having known that　　　

C、To find out whether　　 D、Not knowing why

6、When first　　　 to the market,these products enjoyed great success.

A、introducing　　 B、introduced　　 C、introduce　　 D、being introduced

5、The flowers　　　 sweet in the botanic garden attract the visitors to the beauty of nature.

A、to smell　　　 B、smelling　　　 C、smelt　　　　 D、to be smelt

4、　　 pity on the snake led to his own death.

A、The farmer to take　　 B、The farmer taking　　　

C、The farmer’s taking　　　 D、The farmer took