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

We (look for) her ring for two hours and then we found it in the bathroom.

93/100

We (look for) her ring for two hours and then we found it in the bathroom.

Had looked

Had looking

Had been looking

Looked

Giải thích

Chọn đáp án: C