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10.If your call is not answered within two minutes,you ______ to hang up and dial again.(  )
A.would be advisedB.are advised
C.have been advisedD.were advised

分析 如果你拨打的电话在两分钟之内没人接听,建议你挂机重拨.

解答 答案:B
句意表达的是真实的假设,要用一般现在时态;advise sb to do sth建议某人做某事.故选B.

点评 由引导词if或unless引导的状语从句叫做条件状语从句.在英文中,条件是指某一件事情实现之后(状语从句中的动作),其它事情(主句中的动作)才能发生,通常译作"假如".注意:在含有条件状语从句的复合句中,表示将来时态,主句是一般将来时态,祈使句或情态动词,从句要用现在时态来代替将来时态.

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