HE WAS SO TIRED THAT HE FELL ……….. DURING THE LECTURE.A. SLEEPING...

32. - BAI TAP TRAC NGHIEM VE TU VUNG
BAI TAP TRAC NGHIEM VE TU VUNG
32. He was so tired that he fell ……….. during the lecture.A. sleeping B. asleep C. sleepy D. sleepless