*Question*
A mail service will often drop packages off, but also do what with them? Choose the most suitable option to answer the above question. Options：  A. open them  B. lift up  C. picking up  D. catch  E. pick up
**Answer**
E

*Question*
Where might you go to buy silk? Choose the most suitable option to answer the above question. Options：  A. expensive clothing  B. garments  C. chinatown  D. downtown  E. nightgown
**Answer**
C

*Question*
What do use coal to light? Choose the most suitable option to answer the above question. Options：  A. fire  B. (this question makes no sense)  C. underground  D. stocking  E. fluid
**Answer**
A

*Question*
If you get something for no cost you get that thing what? Choose the most suitable option to answer the above question. Options：  A. retail markup  B. revenue  C. income  D. for free  E. benefit
**Answer**
D