B since 加過去時(shí),主句要用現(xiàn)在完成時(shí),如：
It has been 5 years since I came here.
Since I began to work here three years ago,this factory___in size. A.had doubled B.has doubled
Since I began to work here three years ago,this factory___in size. A.had doubled B.has doubled
為什么B解釋下謝謝
為什么B解釋下謝謝
英語人氣：762 ℃時(shí)間：2019-11-23 14:05:09
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