1.My cousin... (celebrate) His birthday on the 13th of January.
2.If we... (pollute) our planet, many plants... (disappear).
3.When i... (do) my homework, I... (surf) the Internet.
4.My grandparents... (fly) to france next month.
5. If Jack... (take) part in the competition, He... (win).
6. I think i... (go) for a walk tonight.

Раскрой скобки, поставив глаголы в Present Simple или Future Simple. Помогите пожалуйста.
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