Поместите глаголы в скобки в настоящем совершенном времени (Present Perfect Tense) 1)I...(already\to go) to the seaside this week
2)Tom...(already\to buy) souvenirs for his parents.
3)Mary...(not\to watch)a puppet show yet.
4)You...,(never\to be) at the theatre.
5)She...(already\to see)this exhibition
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1.I've already gone

2.Tom's already bought

3.Mary hasn't watched

4.You've never been

5.She's already seen

1)I have already gone to the seaside this week

2)Tom has already bought souvenirs for his parents.

3)Mary hasn't watched a puppet show yet.

4)You have never been to the theatre.

5)She has already seen this exhibition

PS: Present Perfect

have(i you we they)                         (V-verb)

has(he she it)                                 + Ved/3form

Начет подчеркнутого to: оно всегда идет вместе с to be во временах Perfect, потому "at the theatre" будет некорректным

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