they had four lessons this morning ,{ } they A had not B did not C weren't D didn't麻烦说下原因好吗?

___ is easy to learn.A Class Four B lesson four C Class four D Lesson Four 选那一个 这句话为什么用过去完成时?They had then been without sleep for twenty-four hours. 求下面填空题:2Which dinosaur had four legs?_did.They are ate_. by four yesterday 和 by four the day before By four yesterday,we had already come hereShe said they had already gone there by four the day before mike,chen jie and sarah each plant a flower on the same day.four weeks laker,their plant are different.today they have science lesson. They are four ( )(公共汽车). they had four lessons this morning ,{ } they A had not B did not C weren't D didn't麻烦说下原因好吗? After four hours’drive,they reached ( )they thought was the place they had been dreaming of.答案上是what,为什么不是where呢? Guru had told his four students they were never to do anything without his permission.要整篇文章翻译 ___ is piano lesson?It's at four o'clock. 挑错Lesson Three is the most difficult lesson,but it isn't the most difficult lesson in Book Four.Lesson Three is the most difficult lesson,but it isn't the most difficult lesson in Book Four.挑错并讲解 arent they going to have a lesson today?no,theyre just had （）a.one b.some c.any d.none be quiet.they appear___an english lesson(have) They are having a Chinesd lesson . 陕旅版：Lesson 4 Where are they?课件 They are _______(have) a lesson The students were very tierd,but they _________(go) on running.We ________(learn) Lesson Four last week.Tina went camping in the rain on her last weekend.(对划线部分提问）划线部分：went camping in the rain. They are learning lesson one now.（同义句转换）They are learning ( ) ( )lesson now