Choose the correct verb form to fill in the blank:
Some people ......... a peculiar habit of walking in sleep.

Key Points

• The verb "have" is used to indicate possession or ownership in the present tense.
• In the sentence, "Some people" refers to a plural subject, which is why "have" is the correct form of the verb.
• The other options, "has," "had," and "have been" do not fit the grammatical context of the sentence.

​Therefore, the correct answer is 'Option 2'.

Complete Sentence: Some people have a peculiar habit of walking in sleep.

Additional Information

• Has: Used for singular subjects in the present tense.
• Had: Refers to past possession or ownership.
• Have been: Indicates a continuous state or ongoing action.