17. ---Nancy tried___________,but her eyes started burning.
---What happened to her?
A. not cry B. to not cry C. not crying D. not to cry
18. ---Peter,have your ever heard of___________ boy called Tom?
---Certainly. He's my cousin. Why?
A. a eight-year-old B. a eight-years-old
C. an eight-year-old D. an eight-years-old
19. ---Don’t forget___________ today's newspaper. You are on the news.
---Really? It's interesting.
A. to read B. reading C. not to read D. read