could i use your computer?no,you---.i have to---it.A couldn'

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could i use your computer?no,you---.i have to---it.A couldn't,work on B can't,work on

could如果是表示“可能”用于一般过去时态时,回答可用could.
e.g.Could he play the piano two years ago? 肯定回答：Yes, he could.否定回答：No, he couldn't.
如果表示“委婉”,回答用"can".(Could是can的过去式.在问句中could表委婉的语气.在麻烦别人或表邀请的时候希望得到对方肯定的回答.问句中的could可以用can代替.但为了礼貌.通常用前者.答句中考虑到时态.通常用can回答.)
e.g.Could I use your computer? 肯定回答可用：Yes, you can. 但不能用Yes, you could.否定回答可用：Sorry, you can't.不用Sorry,you could't.（这是固定的定律哦!）
所以选B,望采纳,谢谢!

could i use your computer?no,you---.i have to---it.A couldn' Could i use your car?_________ .I have to go out.A NO,you ca Could i use your car?选择 .I have to go out.A NO,you can't B N -Could I use your computer? Could I use you computer?Sorry,I am going to work on it now. Can you lend me your computer?No,I don't have ___ A.one B.it Could I use your computer for a few moments,please? -Could I use your computer for a few minutes,please? Could I use your dictionary?Yes,you can.It's a _____ (use) t could i use your pen ? A.yes ,you can B.yes,sure C.no,you ca I wonder if I could use your computer tonight?-- _________I’ ----Could I use your computer? ----Sorry,I'm going to ______