()6.I will go to my doctor for () on healthy diet （饮食） A.an

()6.I will go to my doctor for () on healthy diet （饮食） A.an advice
()6.I will go to my doctor for () on healthy diet （饮食）
A.an advice B.some advices C.any advice D.some pieces of advice
()7.It’s my honor () to give a talk here
A.to invite B.to be invited .C .inviting D.invite
()8.I usually go to the movies with my parents , but () alone
A.some times B. sometime .C. at times D.at time
()9.If you want to learn English well , it’s useful to () before class and （）after class
A.review ; preview B.preview ; review C.review ; to preview
D.preview ; to review