选择适当的用语补充对话（）
—（）
—i suffer from a headache

A.safe，expensive，comfortable，harmful and non-side-effect therapy
B.safe，effective，comfortable，harmless and non-side-effect therapy
C.dangerous，effective，comfortable，harmless and non-side-effect therapy
D.safe，expensive，uncomfortable，harm and non-side-effect therapy

A.Please be careful
B.Please relax，close your eyes and breathe calmy
C.Please take care of you bag
D.Please help yourself

A.I often suffer from back pain
B.My head is much big
C.I can’t eat anything
D.I have a good waist