The Smiths ___China for three years.a.have come b.have been to c.have been in d.have come to

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TheSmiths___Chinaforthreeyears.a.havecomeb.havebeentoc.havebeenind.havecometoTheSmiths___Chinaforthr

The Smiths ___China for three years.a.have come b.have been to c.have been in d.have come to
The Smiths ___China for three years.a.have come b.have been to c.have been in d.have come to

The Smiths ___China for three years.a.have come b.have been to c.have been in d.have come to
C
史密斯一家在中国已经有3年了.
因为是一段时间延续着,所以不能用come to,have been to 的意思是去过
而时间壮语是一段时间而不是几次,所以也不适合
所以选择c

c