Bộ 20 đề ôn thi vào Chuyên Anh năm 2023 cực hay có lời giải (Đề 35)
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I don’t know what the matter with him is. He ____ (7. act) funny since you ____ (8. be) away.

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I don’t know what the matter with him is. He ____ (7. act) funny since you ____ (8. be) away.

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Giải thích

I don’t know what’s the matter with him. He __ has acted/has been acting _ funny since you _ were _ (8. be) away.