Bộ 20 đề ôn thi vào Chuyên Anh năm 2023 cực hay có lời giải (Đề 34)

He ___ his grandmother’s phone number with his girlfriend’s, which led to some embarrassment for him.

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He ___ his grandmother’s phone number with his girlfriend’s, which led to some embarrassment for him.

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Giải thích

mixed up