精选优质文档-倾情为你奉上(所有题目的答案请写到答题卡上)一、单项选择(共20题,每小题1分,共20分)1. I find _ difficult to finish the work on time. We only have three hours left.Ait Bthat Cits Dthis2. - When did your father come back last night? -He didnt come back_he finished all the work.AuntilBwhileCifDunless3. I think Kate will come if she _ free this afternoon.AisB.will beCwasDare4. The woman doesnt allo