Bộ câu hỏi: Thì và sự phối thì (Phần 1) (Có đáp án)

I have been reading this book

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I have been reading this book ______ .

since I borrowed it from the local library

when I borrowed it from the local library

once I borrowed it from the local library

until I borrowed it from the local library

Giải thích

Chọn A