they were not sure how to use it 为什么?

they were not sure how to use it 为什么? They were not sure if the new invention could carry voices.的翻译 翻译英语句子1.They were not sure the small machine could really carry voices1.They were not sure the small machine could really carry voices.2.From then on,hellois often heard when you picked up the telephone. they were not taken seriously. They were not my grandparents. Lily had not the h(-----) to tell her that they were not the new owners of the flat They were also quite sure that a cigarette end did not start the firethat a cigarette end did not start the fire是结果状语从句吗?修饰sure? Although we are not sure when people began to show interest in the languages they were using?帮忙分析下此句的结构以及意思谢谢 Were they happy?怎么答?a：Yes,they were· b：No,they were not· 他们不能确信是they are not sure还是they can‘t be sure?为什么 they died b____they were not careful things were not turning out like they were supposed sure they i am not sure if they're coming什么意思? I am sure they do not get there by chance. 选词填空（fairly,rather,very,quite)1.She was ---much interested in what I said2.They were also----sure that acigarette end did not start the fire3.The shoes are-----too small for me.They fit you----well Tom and Mike were good friends.Sometimes they were kind to each other,but sometimes they were not.Some of their classmates said they were like brothers.One day they went out for a walk together.At noon they very hungry and went into a restaurant to h 新概念英语53课问题Yesterday,the firemen examined the ground.和Yesterday,the firemen have examined the ground.有什么区别?They were also quite sure that a cigarette end did not start the fire.和They were also quite sure that a cigarette