the answer is A,why not use tell me why ,thanks

the answer is A,why not use tell me why ,thanks
-your english teacher's spoken english is very standard,wang ping.
-it's no wonder.she ___ in the UK for a year as a visiting scholar.
A worked B has worked C had worked D has been working
英语人气:912 ℃时间:2020-04-16 18:03:50
优质解答
---your english teacher's spoken english is very standard,wang ping.
---王平,你的英语老师所讲的英文非常标准,
这句说明王平的英语老师现在已经在这里教书了,没在UK了
---it's no wonder.she ___ in the UK for a year as a visiting scholar.
---不足为奇.她曾经作为访问学者在英国工作了一年.
这句说明她曾经是在英国工作了一年,而不是从过去一直到现在都是.强调一个过去的动作,所以选A.
B的话是现在完成时,是表示从过去到现在一直持续的动作,而文中并没有这个意思
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