Could I borrow that book when you've finished reading it?that是代词吗?“you've finished reading it 当你读完后”,怎样理解是现在完成进行时?it 又是指什么?

couLd i borrow your book?否定回答 could i use your book?i'm sorry but i( )use the book myself .i must finish it today .that's OK,i ( )borrow Lucy's A.must;could .B.have to ;can.C.have to;could.D.must;can. Could I borrow your dictionary?肯定回答是什么? Could i borrow your mp3?Yes,help yourself. Could I borrow your camera t() ,please?xiexie ''Could I borrow your eraser ,please Mine is broken. could I borrow your e__?(首字母填空） Could I borrow your ________?第五个字母为r could I borrow your(_ _ _ _r_)? Could I borrow your dictianary?回答Yes,you may borrow.可不可以?为什么 Could I borrow that book when you have finished( )it?a.to read b.not to read c.in reading d.reading Could I borrow your bicycle?(改为同义句) Could I___a bicycle _____ ______ ----could i borrow your pen?----yes,you______到底是COULD还是CAN? 1、-Could I borrow your pen?-Of course you ( ).A.can B.could 2、He is the student ( )we wantto talk.A.about who B.to whom C.that D.whom说明理由,急 I wonder what that could Wish That I Could Tell Could I borrow your computer?Sorry,but I need it 回答为什么非要加but 用borrow或send填空：Could I ( ) your dictionary?I will return it late.