100 câu trắc nghiệm Thì quá khứ hoàn thành tiếp diễn (Past Perfect Continuous) có đáp án

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We were shocked to see her. ________ been expecting her.

9/100

We were shocked to see her. ________ been expecting her.

We are

We have

We'd not

Giải thích

Chọn đáp án C