Bộ 20 đề ôn thi vào Chuyên Anh năm 2023 có lời giải chi tiết (Đề 42)

Deborah is going to take extra lessons to catch up______ what she missed why she was away.

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Deborah is going to take extra lessons to catch up______ what she missed why she was away.

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Giải thích

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