作业帮Shanghai_________（be） a small town hundreds of years ago.Now it_______（be come） a large city.
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Shanghai_________（be） a small town hundreds of years ago.Now it_______（be come） a large city.
Shanghai_________（be） a small town hundreds of years ago.Now it_______（be come） a large city.
Shanghai_________（be） a small town hundreds of years ago.Now it_______（be come） a large city.
was has been
was,became
is,coming
fnj
is coming
is, has become
was becomes
is had become
你好，准确应该分别为：was,has become.解析：ago跟一般过去时连用。Now跟现在进行时、完成时连用。满意请采纳，谢谢！楼上明显漏看，所以错误。
前面用一般过去时，was.后用现在完成时态 has been
was is come
was is coming
你在上海吗
这是什么意思