It is twenty years since I have seen her这个句子是否正确我已二十年没见到她了.我也认为不正确.可这样一个句子出现在牛津词典上.拿不准.有准确依据吗?

（ )is ten and ten it's twenty how t____ is it ? it's twenty meters tall Is it twenty to 11 now?---No,it`s twenty ____eieven.____上填介词 Judy,I guess you are only twenty-five years old,is that true?Oh ,it's a _.A.suggestion B.secret C.reason D.problem It is no longer what it was twenty years ago.是什么从句? ____ ____ is ten and ten It's twenty. It's twenty years that we (became) friends是用became还是have been How far is it?________.A.It’s twenty miles.B.It’s twenty –minutes mile.C.It’s twenty minutes ride.D.It’s twenty minute ride. My hometown is no longer the place( ) it used to be twenty years ago It is Tom's brithday ,Tom is twenty,but it is his fifth brithday.Why? It's twenty to seven It’s about nine twenty it's four twenty-three it's twenty metres tall? A:______ is she?B:She's twenty-four.She's ten years older than me.填一词 2.how much is it?It's thirteen dollars and twenty—five cents （）is it ?—— it's twenty to six只有一个空格 _____ is it from here to the station? It's only twenty minutes' walk.