100 câu trắc nghiệm Thì quá khứ hoàn thành tiếp diễn (Past Perfect Continuous) có đáp án
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I was very nervous while holding my speech. I ________ (never stand) in front of so many people.

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I was very nervous while holding my speech. I ________ (never stand) in front of so many people.

hadn’t never been standing

hadn’t been standing never

had never been standing

had never stood

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Chọn đáp án: D