Пожалуйста 19!!!!! Даю 15баллов

Question

Пожалуйста 19!!!!! Даю 15баллов

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Answer 1

1) We have already been to London.

2) We were in London 5 years ago.

3) They didn't see the Tsar Bell when they were in Moscow.

4) They haven't seen the Tsar Bell yet.