Bộ 3 đề thi giữa kì 1 Tiếng Anh 10 i-Learn Smart World có đáp án - Đề 2
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My laptop is still ______________ a two-year warranty, so they will fix it for free.

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My laptop is still ______________ a two-year warranty, so they will fix it for free.

under

at

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on

Giải thích

Chọn A