( )| A．We should do exercise every day. |
| B．We should eat fruit every day. |
| A．drinks | B．drink | C．drinking |
( )| A．Many people go to work by car. |
| B．People walks to the market every day. |
( )| A．We shouldn’t litter anywhere. |
| B．We shouldn’t kill wild animals. |
( )| A．You shouldn’t litter. |
| B．You shouldn’t kill wild animals. |
(写出合理的句子) 
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