Task 3. Expand the parentheses by placing the verb in one of the 5 tenses studied. Use indicators to select grammatical tense.
Раскройте скобки, поставив глагол в одно из 5 изученных времён. Используйте для выбора грамматического времени индикаторы. (5 баллов)

1. The students in our class … (plan) trees in the school garden now.
2. The boy … already … (throw) the rubbish into the trash can.
3. We … (work) together in the factory next month.
4. Last year, the level of the lake … (increase) by 4 centimeters.
5. Every year, hundreds of natural animal habitats … (disappear) on Earth.