When she                at the new dress for half part an hour, she asked how much it .

Câu hỏi :

When she                at the new dress for half part an hour, she asked how much it .

A have looked/ cost  

B had looked/ cost

C has been looking/ costed

D looked/costs

* Đáp án

B

* Hướng dẫn giải

Phương pháp giải:

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