They didn't know _____their holiday?A,how they can spend B,how could they spendC,how to spendD,how they will要说明原因噢,为什么?B怎么不对

they didn't know how they could do it.同义句they didn't know --------- --------- -----------it. He didn't know what he should do.(改为简单句)He didn't know ___ ___ ___. 英语题! they go fishing 【three times a week】 对划线部分提问they go fishing 【three times a week】 对划线部分___ ___ ___ they go fishing2.he said he didn't know what he should do next 同义句he said he didn't know ___ ___ ___nex ''What is happening ouside?'' (用she didn't know作主语） She didn't know ___ ___ ____ outside. l didn't know which one I should choose.改为同义句:I didn't know which one ___ ___. I didn’t know how would they go to london. didn't they know the apponited time 如题, 改错：They didn't know where the mouse from. they even didn't know who you were.how______they___(believe) They didn't __ ___ on their days off They didn't know Spanish,and the waiter____know EnglishA.didn'tB.donitC.doesn'tD.isn't I didn't kow what to do.[同义句】=I didn't know what ___ ___　＿＿． I didn’t know the little girl didn't know how she could get home.改为同义句The little girl didn't know ___ ___ ___ home. They didn't know what they should do to deal with the problem.They didn‘t know what _____ _____ to deal with the problem. you bought a new computer last week,___ you?A.aren'tB.don'tC.didn'tD.haven'tFew well-know singers came to the concert,did they?A.No,they didn'tB.Yes,they didC.No,they didD.Yes,they didn't I know they didn't go home until they finished that task.语法正确吗? i didn't know they would go to Japan 为什么是they would