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Ex. 1. Open the brackets in Present Perfect or Past Simple:

1. I (to lose) this paper yesterday. 2. He just (to play) a game of chess. 3. Nick already (to finish) this job. 4. He never (to travel) by plane. 5. John (to buy) a house last year. 6. I (not to see) Smith since 1998. 7. I (not to see) Smith in 1998. 6. They (not to win) any matches lately.