感知以下句子，补全方框下的小题
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1．I suggest you (should) have enough sleep.
2．My suggestion is that we (should) walk home instead of taking a taxi.
3．The pencil seems as if it were broken when it is partly put in the water.
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1．当suggest，suggestion表“建议”时，其后的宾语从句、表语从句的谓语动词用should＋do，should可以省略。
2．在asif引导的表语从句中，用过去时表示与现在事实相反的虚拟语气，be动词常用were。
