—Did you have any difficulty catching yesterday’s lecture?—No. The professor spoke very clearly

Question

—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

Answer 1

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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。