Mary tried to keep calm although she was very disappointed.
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Đáp án đúng: B
Dịch: Mặc dù thất vọng là vậy, Mary vẫn cố gắng giữ bình tĩnh.
Even though it was raining heavily, the explorers decided to continue their journey.
Housewives do not have to spend a lot of time doing housework any more.
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