The correct answer is B:
is sleeping
Explanation:
To determine the correct answer, we need to consider the context of the sentence and the tense of the verb.
1. Present Continuous Tense:
- The sentence is describing a current action or state.
- In this case, the action is "sleeping."
- The present continuous tense is formed using the auxiliary verb "is/are" + present participle (-ing form) of the main verb.
- Example: I am sleeping, he is sleeping, they are sleeping.
2. Meaning of the Sentence:
- The sentence states "Don't disturb him."
- This implies that the person is currently engaged in the act of sleeping.
- Therefore, we need to use the present continuous tense to indicate the ongoing action.
3. Options Analysis:
- Option A:
sleeps
- This is the simple present tense, which does not convey the ongoing action. Incorrect.
- Option B:
is sleeping
- This is the correct option as it uses the present continuous tense to indicate the ongoing action. Correct.
- Option C:
is sleep
- This is not the correct form of the present continuous tense. Incorrect.
- Option D:
sleep
- This is the simple present tense. It does not convey the ongoing action. Incorrect.
Therefore, the correct answer is B:
is sleeping
.