Поставте модальні дієслова в запропонованому в дужках часі:
1. He can translate this text easily. /Past/
2. We must study this subject well. /Past/
3. The students may use dictionaries. /Past/
4. I can do this work myself. /Future/
5. They could come in time. /Present/
6. You must know this rule. /Future/