chọn câu trả lời đúng nhất 1. They have decided to clean up the neighbourhood ........... it is full of rubbish. A.so B.but C.because D.although 2."Be a buddy" was founded ............. to help the street children. A.since 2010 B.in 2011 C.every year D.for 2010 3.It is patient ............... wood. A.to carve B.carving C.carve D.carved

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