Parts of the following sentence have been given as options. Select the option that contains an error.
While I was walking to the store, my friend calls me and ask for a favour.

Question

Accepted Answer

The sentence is: "While I was walking to the store, my friend calls me and ask for a favour."

Step 1: Analyze the tense consistency.
- "While I was walking" is past continuous tense.
- "my friend calls me and ask" is present tense, which is inconsistent with the first clause.

Step 2: Correct the verb forms to maintain tense consistency.
- Since the first clause is past tense, the verbs in the second clause should also be in past tense.
- "calls" should be "called".
- "ask" should be "asked".

Step 3: Check subject-verb agreement.
- "my friend" is singular, so the verb should be "calls" in present or "called" in past.
- "ask" should be "asks" in present or "asked" in past.

Therefore, the error is in option 2: "my friend calls me and ask" because the verbs do not agree in tense and number.

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