I
1.how can you reduce your waste in home
2,we can not preven for natural diasters but we can preapre for them
3,i had been told it was a good film by my friends
4,eating too much sugar can result in health problem
5,english is an official language here also in Singapore
II
1,because their was a loud noise next to my door last night i could not sleep
2, your cheque was sent last Friday
3, If the factory doesn`t treat its waste well ,there will be a lot of water pollution
4,our car is going to be servied by a mechanic tomorrow morning
5,because of the dangrous acid rain,trees leaves are damaged
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