この練習では、B1レベルの主要な英語の時制（現在形、進行形、完了形、過去形、未来形など）を復習し練習できます。質問文や日常的な文脈の中での活用を通じて、時制の理解を深めることができます。
1. They _____ on the project since last month.
2. I _____ a movie when the power went out.
3. _____ sushi before?
4. By the time we arrived, the concert _____.
5. What _____ at 9 p.m. last night?
6. She _____ to the gym every Monday morning.
7. We _____ the report by Friday.
8. I’ve just spoken to him on the phone.
9. They _____ the answer to the question.
10. _____ from home today?
11. They _____ for over an hour when the bus finally arrived.
12. What time _____?
