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overexposure to the sun can produce……..some toxic chemicals

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  The disease is said to kill an estimated 3 million people each year in the world's tropical regions, predominantly southern Africa

• Choose the letter A, B, C or D to complete the sentence: How are you? ……….. ‘re good.

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  Teenagers are quick to react _______ a number of emotions

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  Parents blame it on the mounting pressure on the children in schools and tuition classes

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  Many measures have been taken to ____ people's awareness of conservation

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  Neither Mary nor her friends___________ going to the party

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  Robert de Niro began acting in the 1970s. He has been ____ for about 35 years.

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  _________, Tim recovered from the sickness quickly

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  Once _______ for its efficacy, the latest vaccine will be readily available

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  Steve did ........ his back last week carrying that piano

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  I always look ____________ for deals when I'm shopping

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  I'll phone Mike as soon as I ____ any news

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  If there were no subjunctive mood, English______much easier

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  Lately, I ____ about changing my career because I ____ dissatisfied with the conditions at my company

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  Many linguists fear that global languages could ________ local languages as the main means of communication in these places

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  Just because he doesn't ask __________ or want your help, doesn't mean he doesn't need it

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  Her nerves gradually went ......... as the performance continued

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  I am right, _____?

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  When he came ……., he found himself in the bed

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  This programme attracts millions of ________ all over the world