Simon was riding to school( )he was hit by car is morning.括号内为什么不能填while was riding 是可持续动词,hit是不可持续动词,as 和while应该都可吧?

Simon was riding to school( )he was hit by car is morning.括号内为什么不能填while was riding 是可持续动词,hit是不可持续动词,as 和while应该都可吧? Simon was riding to school( )he was hit by car is morning.括号内为什么不能填while ?was riding 是可持续动词，hit是不可持续动词，as 和while应该都可吧？ Simon () while he () his bicycle and hurt himself.a.fell;was riding b fell;were riding c had fallen;rode d had fallen;was riding这题是选a还是d,为什么 ----Simon,what was wrong with you yesterday?You hurt your leg.----When I was riding,the car before me _______ stopped and I knocked into it. He was riding to school(_)he was hit by a car this morning怎么填 He was riding to schol__ he was hit by a car this morning.填连词 He was riding on without even looking round to see whether the old woman was Simon not did go to school because he was ill.(对 because he was ill提问）_______ _______ Simon ______ to school? 单选He was riding to school_________he was hit by a car.Awhile Bwhen Cfrom Dso单选He was riding to school_________he was hit by a car.AwhileBwhenCfromDso He was riding on without even looking round to see whether the old woman was all right. How great Simon was at the show!I wish I ______(be)Simon to be the host.答案是were,为什么? Simon said it was possible for him to work out the problem by himself.(改为同义句)Simon said he ( ) ( ）out the problem alone. riding he wents to bike riding on weenkend为什么用riding? he wents to bike riding on weenkend为什么用riding? Bad luck!l was in a hurry riding to school when suddenly my bicycle tyre b___.翻译,并填空, 改为同义句Debbie and Simon looked up as a well dressed lady entered改为同义句1.Debbie and Simon （looked up as） a well dressed lady entered2.The lady (glance at) them both.3.I (prefer) walking (to) riding the bike.4.Tom (decided to) impr he's clever enough to (发明) a lot of things simon was happy.he came in(without) a smile