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 The boy is ______ computer games and stays in the Internet cafe all day and night.

  A. interested in             B. enthusiastic about C. crazy about                    D. surprised at

 It ______ delicious, so the cake was eaten up and mother smiled.

  A. was tasted                B. tasted           C. was tasting                  D. tastes

In public places, we can often see ______ that tell us useful things, such as no parking, no smoking, etc.

  A. symptoms                 B. signs            C. systems                         D. signals

He was walking along the sands ______ he saw a big footprint in the sand.

A. while           B. as              C. when               D. after

---Did you tell Julia about the result?

   ---Oh, no, I forgot . I _____ her now.

   A. will be calling   B. will call         C. call                 D. am to call

He found that his house had been ______ and some important files were lost.

   A. broken into             B. taken out        C. made into                          D. run out

It is ______ that we can’t finish it on time.

   A. so a hard job           B. such hard a work  C. such a hard job             D. so hard a work

He was really disappointed to find that he had failed to make himself ______, although he tried his best to describe vividly.

 A. pay attention    B. paying attention to C. paid attention        D. paid attention to

It is in this laboratory ______ is run by Mr. Wu ______ the experiments are done.

   A. which; that             B. that; which       C. where; that                 D. that; where

Over the past decades, China _______ significantly under the correct leadership of the CPC, he said. The CPC's 18th National Congress will exert great influences on China's future and Africa highly expects of China's further growth.

A. changed           B. is changing       C. had changed       D. has changed