1.He hasn't heard from his friend _____last month.

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1.He hasn't heard from his friend _____last month.
A.since B.by the end C.for D.until
2.Don't hurry.The bus won't start_____everybody gets on.
A.since B.as C.until D.when
3.Please show me_____to send an e-mail,John.It's the first time for me to do it.
A.how B.what C.when D.where
要有详细的原因!

1 a 因为现在完成时加一段时间用for引导一段时间用since加过去的一个时间点 by the end用的是过去完成时 until是直到的意思就像第二题里
2 c until解释为直到这句话的意思是不要急公交车是不会开得直到所有人上了车
3 a how表方式意思是告诉我如何发一封邮件这是我第一次发邮件

1.He hasn't heard from his friend _____last month. 27.He hasn’t heard from his friend __________ last month. He hasn,t heard from his frend______last month.A.since B.by He hasn't heard from his friend________last month. A.since B she hasn't heard from him_______ last month. he hasn't heard () his uncle for a long time she hasn't heard from him_______ last month.3Q 句型转换.如题1.Henry hasn't recovered from his cold,so he doesn't He turned 73 last month but he hasn't .. 1.he hasn't been able to lose his weight,( )he has done much 这个题怎么做?1.Tom hasn't received a letter from his parents for a He went to the beach with his friend last month.