Fill in the blanks with an appropriate verb form:

The teacher looked around but ……………………. anyone.

didn’t find

The correct verb form to fill in the blank is didn't find. The simple past tense of the verb "find" is didn't find. The context of the sentence indicates that the teacher looked around in the past and did not find anyone, so the simple past tense is the most appropriate tense to use.

The other options are incorrect.

• Don't find is the present tense of the verb "find".
• Hadn't found is the past perfect tense of the verb "find".
• None of the above is also incorrect because none of the other options are appropriate verb forms to fill in the blank.