问题
选择题
—Did you have any difficulty catching yesterday’s lecture?
—No. The professor spoke very clearly to make his speech easy _____.
A．understood
B．understanding
C．to be understood
D．to understand
答案
Ｄ
这题考查句型:make+宾语+adj+to do句型，这里的不定式是主动表示被动。句意是：教授说的很清楚使他的演讲很容易理解。选D。