Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions: 

We have conducted (A) exhausting research (B)into the effects of smartphones on students’ (C) behaviour and their (D) academic performance

Choose the correct answer to complete the sentence. "What types of the media are the most and the least ______ to you?"

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Professor Blumstein says that ecotourism is similar ____ domesticating or urbanizing the animals

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Mary: I didn‟t get the job! Tom: __________

I hope that my working experience and educcation can be of . .............to West China Supermarkets. 

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That football player received the second yellow card at the end of the first half and was ________ from the match by the referee.

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In the UK, seven is usually regarded ____ the luckiest number while thirteen is the opposite

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______ are the formal rules of correct or polite behavior among people using the Internet

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No thief, however skillful, can rob one of knowledge, and ____ knowledge is the best and safest treasure to acquire.

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The living __________ in my town has been improved a lot

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My parents are travelling across Asia by train and are planning to __________ in Tokyo

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Laura is anxious about her parents’________ because they may not let her stay the night away from home

Choose the best answer to complete each sentence

They got married without their parents’______.

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It seems that he is the best teacher at high school, ______?

Mark the letter A, B, C, or D on your answer sheet to indicate the undelined part that needs correction in each of the following questions: 

Higher education is very (A) importance to national (B) economies, and it is also a source of framed and (C) educated personnel (D) for the whole country.

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________is the existence of a large number of different kinds of animals and plants which make a balanced environment

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We _______ at six in the morning on our drive to the Grand Canyon

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When you purchase anything in this shopping mall, your first order is delivered free as a(n) _________ offer

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It seems that you are responsible for that mistake, _____?

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Jack was the handsome person ____________ I was talking yesterday.

Parents whose children show a special interest in a particular sport have a difficult decision to  ______ about their children’s career.