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D. don’t talk 14. I went to school without ________ anything. A. to eat B. eating C. eat D. to eating 15. We should read books ________. A as much as possible B. as many as possible C. as many as you can D. as much as you can 16. I have to do ________ homework today. I am very busy. A. too much B. too many C. much too D. little 17. We should plant more trees because they can ________ harmful gases. A. put in B. put on C. take on D. take in 18. When you _________, they have gone to school. A. got B. reached C. arrived D. arrived at 19. ________ to ask me for help? A. Why don’t e B. Why not e C. Why not to e D.