We could not fly kites yesterday because it rained hard(对划线部分提问)

We could not fly kites yesterday because it rained hard(对划线部分提问) how time ___(fly)!we should not ____(waste) time We does not fly kites last Sunday.中文翻译 Before the Wright brothers invented the plane,men ( ) fly.A.could not B.can not The birds could not fly in the sky .改同义句 The birds ? ? ? fly in the sky we could not move them 和we could not be moving them 区别 When we heard that,we could not s（）laughing You could fly without wings We could not help后面加动词什么形式? we could not help___moving to be moved to movebeing moved We could not hear the teacher clearly用as改 WITHOUT WATER,WE CAN NOT LIVE不行吗?只能WE COULD NOT LIVE? could not could not baby、we can fly fly away .. If it _ for the rain,we _ the picnic yesterday.A were not; could have hadB were not; could haveC had not been; could have had we could not wait for him any more.we decided to go to the park-------him Without your help,we could not have succeeded.句子后面的 we could not have succeeded可以换成we would ntot have succeeded吗?不是应该用虚拟语气吗？那could not 为什么是对的？