CHOOSE THE BEST OPTION A, B, C OR D TO COMPLETE THE SENTENCE.EXERCISE...

11. - PASSIVE VOICE LI THUYET BAI TAP DAP AN
PASSIVE VOICE LI THUYET BAI TAP DAP AN

11. I found this book on my desk when I came to class. It must ……. by one of the students in

earlier class.

A. be left B. have been left C. leave D. have left