Поставить в present perfect tense. 1.you (make)a mistake. 2.we (eat)our dinner. 3.the train just (go). 4.i just (tell) tthe answer. 5.george never (be) in australia. 6.john and richard just (go away). 7.the baker (sell) all his cakes.

1.You (have made) a mistake.
2.We (have eaten) our dinner.
3.the train (has just gone).
4.I (have just told) tthe answer.
5.George (has never been) in Australia.
6.john and Richard  (have just gone away).
7.The baker (has sold) all his cakes.