2.We're discussing why ______ for our health.( )
| A. | are fast food bad | B. | fast foods are bad | ||
| C. | fast food is bad | D. | is fast food bad |
1.---I'm worried about the air.
---______.There might be heavy pollution.( )
---______.There might be heavy pollution.( )
| A. | Me too | B. | Never mind | C. | Of course | D. | Not yet |
20.It's hard to hold back the tears.This is ______thing I've ever heard.( )
| A. | sad | B. | sadder | C. | saddest | D. | the saddest |
19.---What tools ______to make paper cutting?
---Scissors.( )
---Scissors.( )
| A. | are used | B. | used | C. | will use | D. | use |
18.These light bulbs look the same,but their ______ on the environment are different.( )
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| A. | solutions | B. | methods | C. | effects | D. | secrets |