Question

which tense does the sentence use? the girls have books about the planets. past tense present tense future tense

Explanation:

To determine the tense, we analyze the verb "have". In the present tense, for plural subjects (like "the girls"), the base form of the verb (or appropriate present - tense conjugation) is used. "Have" here is in the present - tense form (for plural subjects, the present - tense of "have" is "have" itself; past - tense would be "had", future - tense would be "will have"). So the sentence uses the present tense.

Answer:

present tense