语法填空

participate in; speak up; feel at home; engage in get involved in; adapt to; in comfort; speak of

【小题1】If you thought that wasn’t fair, why didn’t you ________?
【小题2】Many more firms are ________ the growth of demand on the world markets.
【小题3】He ________ a serious study of the problem yesterday.
【小题4】________ power, we could use yours if you still have it.
【小题5】This will enable the audience to sit ________ while watching the shows.
【小题6】I ________at once, because I recognized familiar faces.
【小题7】He doesn’t want to ________this dispute.
【小题8】The world will be different, and we will have to be prepared to ________ the change.