1.A：I am afraid we are late.The film (has begun 开始）already.
B：So we are.It (has been on )（开始）for ten minutes.
2.A：You （have been to 去过） the Yellow Monutain three times,haven't you?
B：Yes.I （went 去）there for the third time in 2009.
3.A：Have you （received / got 收到）a letter from Jane this week?
B：Yes.I ( have heard from 收到）it for two days,but I haven't written back yet.
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