The volunteers try to convince people _____ the fact that some species are in danger of _____

The most important word in the sentence has been_____ , so it doesn’t make any sense.

下列加横线的成语使用正确的一项是（ ）

Could I have an interview with Mr Green now， please— Sorry， he _________ a meeting. You’d better wait a minute.

下列句子中有语病的一项是 （ ）