II. Chọn đáp án đúng có đáp án

When Carol _______ last night, I _______ my favorite show on television. A. called / was watching B. had called / watched C. called / have watched D. was calling / watched

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When Carol _______ last night, I _______ my favorite show on television.

called / was watching

had called / watched

called / have watched

was calling / watched

Giải thích

Chọn đáp án A