The boy's talent might have lain ______ had it not been for his uncle's encouragement.

A．He had a neat and clean appearance.
B．He was volatile and highly emotional.
C．He was very modest about his success in teaching.
D．He sometimes lost his temper and shouted loudly when teaching.

A．had a good command of French
B．couldn’t make sounds properly when learning Arabic
C．spoke highly of Mr. Beheit’t achievements in language teaching
D．didn’t like Ahmed’s style of teaching