Has Jack finished his homework yet?I’ve no idea,But he ______ it the whole afternoon.A.would do B.was doing C.did D.had done望详解.只提供答案的就不要解释了.那么A项如何排除？

jack has already finished his homework .否定句 jack-----------------hishomework ----------- Jack has just finished his homework?就划线部分提问,划线部分是finished his homework 1.The teachers in our school do all ____ improve their teaching abilities.A.they can toB.what they can toC.which they canD.that they can2.-Hi,Jack.What did the boss ask you just now?-He asked me ___ his work.A.if Tom has finishedB.if Tom had finished Has Jack finished his homework yet?I've no idea,Has Jack finished his homework yet?I've no idea,But he _____ it the whole afternoon.[ ]A.would do B.was doingC.did D.had done --has jack finished his homework yet?--i've no idea,but he___it this morning A.was doingB.had been doing C.has done D.did Every Jack has his Every jack has his Has jack a bike? --has jack finished his homework yet?--i've no idea,but he___it the whole afternoonAwould do Bwas doing Cdid Dhad done Tom has finished his work_. 1.Jack has just(finished his homework).()()jack just done?划线部分提问2.How much is the plane ticket?()the()of the plane ticket?同义句3.He went there (by plane).()()he go there?划线部分提问 把下列句子变成过去完成时.1、Jack has already finished the work.Jack went to bed after _________________________.2、They have walked for a long time.They felt tired and thirsty after ____________________________. a jack has been unplugged Who comes to school earlier ,Mike or Jack?A.Jack isBJack doesC.Jack comesD.Jack has 选择正确答案补全对话(Jack has just come from school.He is talking to his mother.)Jack:Can I go out and play football now?Mother:If you have finished your homework.Jack:___1____________Mother:Oh no!Just sit down and finish it now.You’d nev The meeting___for two days.a.has finished b.has ended c.has been over d.finished our love has finished forever是什么意思? 英语翻译：He has finished a third letter.