(Viên chức Mầm non) 1128 câu trắc nghiệm Tiếng Anh A2 có đáp án - Phần 22

I found this book on my desk when I came to class. It must ____________by one of the students in earlier class.

12/30

I found this book on my desk when I came to class. It must ____________by one of the students in earlier class.

be left

have been left

leave

have left

Giải thích

Chọn đáp án B