I Iiked sports____I was young A because B while C if D when

I Iiked sports____I was young A because B while C if D when A.When B.If C.While D.Once 为什么? i was singing songs 【 】walking home A as B when C at D while He slept well ____ the door open .A.when B.while C.because D Do you mind___I use your computer?A.while B.when C.if D.beca ____ she came in,i was writing a letter A when B while C sin ___he was still very young.A.When B.At C.For D.Since为什么这样填 He'll be happy ___he may be.A.when B.if C.because D.wherever I was cookimg_____the bell rang.A.after B.while C.when 选择填空1.I （ ）short and fat when I was young.A.was B.am C.is2.M He asked me__i was busy with those days/A.that B.if C.when D I take back -------I said.A.when B.what .C.that.D.if