22.（ ）

(单选题)The teacher and writer ______ going to give a lecture in our (单选题)It’s impossible for him ______ this tough task in that he is (单选题)Her life has reached a new stage ______ she has to solve all (单选题)You’d better ______ your notes before important examinations (单选题)We can ______ dangerous and dirty waste from factories. (单选题)If you ______ to the library yesterday, you could have met m (单选题)Tina ______ on this project for three months, and she is sta (单选题)When ______ comes to taking a trip, Alice is too happy to sl (单选题)Naturally, children are ______ about everything around them. (单选题)This man enjoys helping the people who are in need and he is