she ___shanghai for a month?
A,has come to B,came to C has been to D has come in
选择C,因为
1）后面有for a month表示一段时间,所以前面用完成时
2）come是个短暂性动词,不能用完成时,只能改成been,所以选择C
where is your father ,LEO?-HE is in hainan on vacation .HE __for two weeks
A has been away B has left C has gone D left
选择A
原因和上面一样的,有两点,一个是for,一个是leave是短暂性动词,所以要用been away代替