They spent as many hours as they could -----their lessons为什么是填to study,而不是根据spend sth on sth,spend sth (in) doing sth,填studying为什么不对?

they spent as many hours as they could (to study)their lessons?这个地方用到什么语法? they spent as many hours as they could_____their lessons?A.to study B.studying C.STUDY Dstudied There were as many serious problems when cars were parked as when they were traveling at 90 m/h They spent as many hours as they could -----their lessons为什么是填to study,而不是根据spend sth on sth,spend sth (in) doing sth,填studying为什么不对? they spent as many hours as they could _______ their lessonA.to study B.studying C.studied D.study 选什么的,为什么?说是表示目的，感觉也有道理，可是觉得B也可以，搞不清楚了…… he spent ----time watching TV as he did studyingA as much B so much C as many D so many They spent as much time traveling as they_________.They spent as much time traveling as they_________.A.readingB.were readingC.did to readD.did reading急 翻译1句话,The students spent as much time getting trained as they did studying. They would ask many questions as they read翻译 they spent as much time as they could___their lessons A preparing B prepare C to prepare D prepared为什么? teenagers should practice their hobbies as much as they can.为什么不是as many as? they spent as much time travelling as they____A.reading B.were reading C.did to read D.did reading The students spent as much time getting trained as they ____ studying.A. disliked B. were C. had D. did The students spent as much time getting trained as they ____ studying.A、disliked B、were C、had D、did They wanted to learn _____ they couldA so much as B as soon as C as many as D as much as为什么? They spent _________money on the house2.There are many more here.Shall I show you _______one?24小时观查 This year they have made ___ they did in 2000.A.three times as many cars as B.three times many cars asC.as many three tines cars asD.three times cars as many as the students spent as much time getting trained as they had studying.为什么用did 不用hadas they did studying 选的did 不是had