1. He may use the diagrams for his report.

2. Every motion must be considered as a relative motion.

3. Fractions can be added if they have common denominator.

4. Most persons can hear sounds between 20 and 20,000 vibration per second.

5. The generator must be repaired as soon as possible

Трансформируйте предложения в прошедшее

1. He might use the diagrams for his report.

2. Every motion had to be considered as a relative motion.

3. Fractions could be added if they have common denominator.

4. Most persons were able to hear sounds between 20 and 20,000 vibration per second.

5. The generator had to be be repaired as soon as possible

и будущее время

1. He will be allowed to use the diagrams for his report.

2. Every motion will have to be considered as a relative motion.

3. Fractions will be allowed to be added if they have common denominator.

4. Most persons will be able to hear sounds between 20 and 20,000 vibration per second.

5. The generator will have to be repaired as soon as possible