________ over everything whenever we want to make a decision, many people believe, and we will have less chance of making mistakes.
| A．To think | B．Think | C．Thinking | D．Thought |
Jumping out of _______ airplane at ten thousand feet is quite _______ exciting experience.
| A．/; / | B．/; an | C．an; an | D．the; the |
The merchant made me promise not to ______ where the goods were hidden.
| A．give up | B．give away | C．get across | D．get out |
The forest guards often find campfires that have not been _______ completely.
| A．turned down | B．put out | C．put away | D．turned over |
I remembered my grandma _________ me stories when I was a little child.
| A．used to tell | B．used to telling | C．was used to tell | D．is used to telling |
If I take this medicine twice a day, it should _______ my cold.
| A．heat | B．cure | C．treat | D．help |