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()1.I was cooking ()he was reading a newspaper

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()1.I was cooking ()he was reading a newspaper
A.after B.but C.while
()2.We()buy bottles or boxes which people can use only once()
A.not ought B.ought to C.ought not to
()3.He is poor ,()he is happy.
A and .B.but C.or
()4.If we want to make our environment beautiful ,we ought()energy and ()pollution
A.to save ,reducing B.to save ,reduce C.saves ,reduces
()5.Give your old clothes()others ()reuse them.
A.to ,to B.to ,for C.to ,with
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C
C
B
B
A

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