In sentence I, the word expresses future prediction; in sentence II, it expresses prohibition.

In sentence I, the word expresses formal obligation; in sentence II, it is used to make a suggestion.

In sentence I, the word expresses personal desire; in sentence II, it expresses certainty about the future.

In sentence I, the word expresses permission; in sentence II, it expresses past habit.

In sentence I, the word expresses possibility; in sentence II, it expresses lack of necessity.

The controversy had arose before the committee forbade the publication of the report.

By the time the suspect had fleed, the investigators seek new evidence.

The hikers had stridden across the valley before the storm arose.

The researcher had foresaw the risks before the policy binded the institutions to new rules.

The old machine had grinded the grain before the workers sweared they had followed the instructions.

The teacher is explaining the instructions to the students.

The sleeping child did not hear the alarm.

Reading improves vocabulary and critical thinking.

The students were discussing the results of the activity.

The movie was boring for most of the audience.