People often do things without giving them a second thought. It is especially easy to be __(21)__ when it comes to money. For __(22)__ , many people believe a newspaper ad that says they can become rich by working at home for one week. __(23)__ , these ads are very clever. They trick people into acting without thinking. The companies almost always are the ones who really make the money. The next time you hear about a promise to make __(24)__ money in a short amount of time, remember to think __(25)__ before you act!Question 21 (21 - 25)(A) friendly(B) famous(C) foolish(D) fast