ld.
everyday , so much litter and waste are poured out from houses ,also pollute the environment ).
the significance for (controlling pollution ) noted that it’s high time that more effective measures should be taken .
therefore ,(new laws should be passed to limit the amount of pollutants from factories . moreover ,in the households ,there is an obvious need to reduce litter and waste . let’s make our good efforts ,and the world will be a safer place to live for us ).
模块（4）
these days we often hear that ( 1 ).
it is common that ( 2 ).
why does such circumstance occur in spite of social
protects? for one thing ,( 3 ).
for another,( 4 ). what is more,
since ( 5 ),it is natural that ( 6 ).
to solve the problem is not easy at all ,but is worth
trying .we should do something such as ( 7 )
to improve he present situation ,and i do believe everything
will be bet