explanation. It seemed there was a large water____4____ for the cattle that had to be filled every day. Because it took a long time to finish it, he would ___5___ the water on and then go about doing other things like cleaning the barn or ___6___the cattle, which usually cost him twenty minutes or even more time. The_____7_____ , of course, was that if he forgot to turn the water off, the tank would overflow, and water would be wasted and it would make a _____8_____.

　　Then he told me the _____9_____he had his hat turned around. When he finished his jobs and began to take off his work clothes, he would notice as he____10____ his hat that the visor（帽舌）was not where it was supposed to be. This would____11____ him the water was still running and he would go back to the barn and tum it____12____.

　　I saw my father develop many other____13____over the years. And I never forgot how helpful and ____14____ they are. Some may have even been life-saving. As we all know, sometimes people forget things and make mistakes ___15___ they may try their best. Using good methods can help them____16____ more effectively. Instead of _____17_____people-or yourself-for mistakes, you'd better look for some ways that will help them in ____18____ what they truly wish to do.

　　This could be practical, and as simple as a checklist. Now I've_____19_____a lot of them, such as putting my car keys in the same place every time. It could be having someone ____20____ your work and it could also be a computer program that finds out whether your calculations are correct.

1. A. passing B. wearing C. holding D. taking

2. A. terrible B. ordinary C. impolite D. funny

3. A. whether B. how C. why D. where

4. A. tank B. pool C. pipe D. bottle

5. A. put B. bring C. carry D. turn

6. A. beating B. feeding C. selling D. pulling

7. A. danger B. conflict C. purpose D. secret

8. A. decision B. demand C. mess D. choice

9. A. pressure B. method C. function D. reason

10. A. raised B. removed C. held D. threw

11. A. confuse B. attract C. remind D. disturb

12. A. down B. on C. up D. off

13. A. systems B. businesses C. products D. programs