Поставьте глаголы в скобках в present perfect или past simple. 1) these tasks … (have) many difficulties. 2) … production managers … (analyse) these data yesterday? 3) a constructor … (build) a house. 4) they … (investigate) the problem a week ago. 5) inflation … (affect) on the economy a lot. 6) early settlers … (preserve) meat by drying and salting it. 7) they … (just/elect) the president of the company. 8) the children … (skate) on the frozen pond last winter. 9) the department … (already/mail) out 200 notices. 10) when he … (return) home they … (not/be) ready. 11) the olympic committee … (announce) the results. 12) we …(be) here since ten o'clock.

Kat11166 Kat11166    2   29.05.2019 17:00    2

Ответы
Snicerenko1980 Snicerenko1980  28.06.2020 21:35
1)These tasks had many difficulties
2)Did production managers analyzed these data yesterday?
3)A constructor has built a house.
4)They investigated the problem a week ago.
5)Inflation has affected on the economy a lot.
6)have preserved
7)have just selected
8)skated
9)has already mailed
10)has returned  was ready
11)has announced
12)have been
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