20 percent of the water we drink is dirty

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• The teather often tells his students _(not swim) alone in the river.Be q_.We will be late for classHis grandpa lives in a village a_He fell off his bike and h_ his left legSome factories are p_ dirty water into the river nearby.It's not s_ for a 5-year-old child to go across the street without any help.
• 1.lf we love Shenzhen,we mush stop dunmping _____(dirty water and waste matter)into the river.
• 1)Look,_____dirty the water is!yes,we should really take action to deal with it.
• and 2,600,000,000 people drink dirty water.
• We need water to drink and oxygen to ------------?A.survive B.breathe
• in some countries,it is not( )to drink the water because it is dirty
• We should drink at ____8 glasses of water every day.（little）
• we need to drink a lot of water every day (划线提问)
• (1) all the things we eat and drink,water is the (2) important.Not (3) people understand this but this is quite true.The
• there we drink if rain have water no is will no to←这些单词连词成句,
• 买3支圆珠笔和一支钢笔共用去9元钢笔的价钱是圆珠笔的4点5倍钢笔和圆珠笔的单价各是多少元
• the old woman_____four_____.