Is your mother an experienced English teacher?Yes,She has taught English ____ thirty tears ago.A.for B.since

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IsyourmotheranexperiencedEnglishteacher?Yes,ShehastaughtEnglish____thirtytearsago.A.forB.sinceIsyour

Is your mother an experienced English teacher?Yes,She has taught English ____ thirty tears ago.A.for B.since
Is your mother an experienced English teacher?
Yes,She has taught English ____ thirty tears ago.
A.for B.since

Is your mother an experienced English teacher?Yes,She has taught English ____ thirty tears ago.A.for B.since
当然选B了,for后面要接一段时间,since后面接一个时间点,很显然的,三十年前是一个时间点,而非时间段,所以要用since

B since 后面接一个具体的时间点
A选项应该是for thirty years ....for 后面接一个时间段

What is your mother what is your mother? Where is your mother? who is your mother Is your mother是什么意思 Is your mother thin? is your mother in Is your mother thin? Is your mother in? ___is your mother?she is an accountant.中间应该填什么? is,mother,your,doing,what What is your mother?回答 How old is your mother? how is your mother翻译 What is your mother like? is your like what mother(?) 翻译：How is your mother? What is your mother's