7. The sun ______ (rise) in the east.

Explanation:

This sentence states a general truth or a fact that is always true. General truths and facts are expressed using the present simple tense.

Solution:

For the third person singular subject 'The sun', the present simple tense adds '-s' to the base form of the verb.

1. Subject: The sun (third person singular)
2. Main verb: rise + s = rises

Answer: rises