Используйте глаголы в Present Perfect,Present Perfect Continuous,Past Simple.
(КТО СДЕЛАЕТ ПИШИТЕ ТО,ЧТО ПОЛУЧИЛОСЬ В СКОБКАХ ТОЛЬКО)
1. The rain (to stop) half an hour ago.
2.Mary (to buy) a new hat
3. I (to buy) a new pair of gloves yesterday.
4.He (to solve) this problem for half an hour.
5. She (to write) this letter for an hour.
6.The children already (to decide) what to do with the books.
7.Yesterday they (to decide) to help their grandmother.
8.They (to fish) for five hours already
9.You ever (to spend) your holidays in the Crimea ?