I know you___(choose)a picturebok among these.这题答案是have chosen,请问为什么用现在完成时态

I know you___(choose)a picturebok among these.这题答案是have chosen,请问为什么用现在完成时态 I know what I would choose may i know your name?(否定答语）no,you___横线填mustn't i dont know which i choose/which to choose速度啊 I don't know which sweater _____(choose) I don,t know which one _____ （choose) i don't know choose which one为什么不对?谢谢 I really don't know which one to choose I don't know which watch _____(choose). 填空!I do not know which Chinese restaurant()(choose). 英语：I don'T know which one_____(choose)I don'T know which one_____(choose)再帮忙说一下为什么. I don't know what to choose for the fashion show为什麽用to choose I really don't know which to choose between the two books./...know to choose which...两句有什么差别吗? There are four answer here.I really don't know ( ) .A.which to choose B.choose which one C.to choose which one D.which one choose i choose I know you___ a member of Green Club for half a year.A.becomeB.have becomeC.have beenD.have joined I don't know( the way to the spots club).对括号部分提问___ ___ you___? I don not know which one I should choose同义句转换 I don not know which one ______ ______