The students couldn't help_laughing___(laugh) at his funny story.为什么?

The students couldn't help_laughing___(laugh) at his funny story.为什么? There were so many students in the class that the teacher couldn't talk to them all.翻译 英语歧义句in what way is the sentence the students complained to everyone that they couldn't understand ambiguous? The students couldn't help____when they heard the joke.A to laugh B laugh C laughing语气亲和、态度友好 4.The students couldn't help ______ when they heard the joke.A.to laugh B.laugh C.laughing 句型转换 The students couldn't have a picnic last Saturday beacuse it rained同义句,最好要理由 she couldn't get her word understand by the students是不是被动语态 若不是请改成被动语态 All the students ( )so deeply by the report that they couldn't hold back their tearsA.moved B.had moved C.were moving D.were moved She couldn't ____ her words ____by the students.A get ,uderstandingB get ,undertsoodC make ,to uderstandD make ,understand 答案是B ,为什么?理由~ School students （）smoke because it is against the school rules.A.needn't B.couldn'tC.won't D.mustn't 1.The students began playing games(保持原意)The students began( )( )games2.Fangfang couldn't speak French( )(fluent)(适当形式)3.There was ( )in his country last autumn.(hungry)(适当形式) the students()()()the teacher The teacher requested that his students ___touch any of the test tubes in the lab.A.mustn't B.couldn'tC.wouldn't D.shouldn'tB为什不对,请解析, most students most of students most of the students都对么?all students all the students？all of the students？ What are the students What are the students Where the students是什么意思 the students'life today