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Our teacher looked here and there on our playground ________ looking for something.

    A. even though                  B. even if                    C. as if                         D. only if

 ____________, they have been struggling against the snowstorm for ten hours.

A. Up to now    B. By the time    C. From then on   D. In the future

11. Though I have often heard this song ______, I have never heard you ______ it.

A. being sung; sang   B. sang; singing  C. sung; sing       D. to be sung; to sing

 The salesman scolded the girl caught ______ and let her off.

A. to have stolen  B. to be stealing   C. to steal            D. stealing

Don’t leave the water_______ while you brush your teeth.

A. run            B. running          C. being run      D. to run

. The _______ boy was last seen _______ near the East Lake.

A. missing; playing   B. missing; play   C. missed; played D. missed; to play

 You can’t imagine what difficulty we had _________ home in the snowstorm.

     A. walked         B. walk        C. to walk        D. walking

16．Martial Art Films are supposed to be educational, inspiring, as well as______.

A. entertaining      B. entertained       C. joy             D. delighted

 –Come on, please give me some ideas about the project.

   --- Sorry. With so much work _________my mind, I almost break down.

    A filled      B filling      C to fill       D being filled

 It is reported that up to now, mountain slides have cut off more than ten villages from the outside world, ______more than 100 hundred people alive and ______ many houses.

A. buried; destroyed      B. burying; destroying 

C. to bury; to destroy     D. being buried; being destroyed