( ) is very difficuit.A.Lesson fifth B.The lesson fifth C.Five lesson D.The fifth lesson请说明理由

Very silly is very is very She is very young Your watch is very Your tighting is very You is very silly jim is very ( ) (fun). He is very fun. She is very small. is o______ very busy. The sky is very It is very hot My English is very She is very It is very crazy. she is very kind he is very funny. It is very hot.