HE COULDN’T GO FAR BECAUSE HE WAS AFRAID OF... A. TO FLY B. F...

1. - 30 BAI TRAC NGHIEM VOI KEYS FOR 9 P
30 BAI TRAC NGHIEM VOI KEYS FOR 9 P

1. He couldn’t go far because he was afraid of...

A. to fly B. flying C. be flying D. being flying