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