改为现在完成进行时态:1.they moved here in 1993.
2.Bill began to talk on the phone five minutes ago 3.my sister is playing with her dolls
人气：384 ℃ 时间：2020-05-13 18:07:01
解答
They have been here since 1993.
Bill has been talking on the phone for 5minutes already so far.
My sister has been playing with her dolls.
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