Read the following passage and choose the item that best answers each of the questions about it

Exercise 2. Read the following passage and choose the item (a, b, c, or d) that best answers each of the questions about it.
You can recycle many types of glass. Glass food and beverage containers can be reused and recycled many times. (In fact, only bulbs, ceramic glass, dishes, and window glass can't be recycled.)
Glass is made from soda ash, sand, and lime. If it's thrown away, it stays there indefinitely because glass never breaks down into its original ingredients. To be recycled, glass is sorted by color, crushed into small pieces, and melted down into a liquid. Then, it is molded into new glass containers.
lime (n) vôi               indefinitely (adv) vĩnh viễn              sort (v) phân loại
1. Which of the following can be recycled?
a. glass food and beverage containers              b. bulbs
c. ceramic glass                                   d. dishes and window glass
2. What does the word 'reuse' in line 2 mean?
a. use something again                    
b. use all of something
c. throw something away                  
d. not buying things which are overpackaged
3. Glass _______.
a. is made from soda ash, sand, and lime
b. stays there indefinitely if it's thrown away
c. never breaks down into its original ingredients
d. all are correct
4. What does the word 'its' in line 5 refer to?
a. glass              b. soda ash          c. sand               d. lime
5. When people recycle glass, they_______.
a. sort it by color and crush it into small pieces
b. melt it into a liquid
c. mould it into containers
d. all are correct.