I (have finished) my homework now.选择题I _______ my homework now.A.finishB.finishedC.have finishedD.had finished正确答案C为什么?B为什么不对?now在这里应该用什么时态啊?

I have finished my homework.反义疑问句 I have already finished my homework.(变否定句) I _____ finished my homework ______. I have finished my homework.和“I finished my homework.有区别吗? I have finished my homework.可否这么说 I finished my homework.为什么 i have finished my homework,为什麼不i had? I have finished my homework before I ______(leave). I have finished my home WORK .对 finished my home WORK.进行提问?该怎么说 I have finished my school work already 改为一般疑问句 I have a ( ) finished my work如题,填空. I have finished my homework.变被动语态 I have finished my homework this morning.改为否定句 I have just finished my homework.（变为疑问句） I have already finished my homework(改为否定句） I have finished packing my suitcase finished pack 为什么是doing? 32、I have finished my homework,Mom.May I st32、I have finished my homework,Mom.May I stop ________ (have) a rest? 初二现在完成时一问一答的句子 如：have you finished your homework?yes.I have finished my homework I（）my homework at seven o`clockI （）my homework at seven o`clock A finished B have finished I have finished my homework before I leave home.和I have been finished my homework before I leave home.有什么区别