He didn't know _____ he should go or not.A.if B.weather C.that D.whether选什么?快

My brother didn't know what he should say.(改为同义句)My brother didn't know what _____ _____. My brother didn't know where he could buy an English book.(改为简单句) My brother didn't know_____ _____ _____ an English book. Mary took his dictionary but he didn't know that （改为同义句）Mary took his dictionary _____ ____. He didn't know how he could get here He said he didn't know it yet 怎么翻译 he didn't know how he could break the ropes同义句he didn't know____ _____ _____the ropesi will stay at home until i finish my homework(同义句）i ____ _____ _____until i finish my homework 英语句子成分划分He didn't come.That is why he didn't know He didn't know what to do next.He didn't know what he ____ ____ next. He didn't know what he should do.(改为简单句)He didn't know ___ ___ ___. He didn't know when he would start.(改为同义句） He didn't know （ ） （ ）（ ） Because he didn't know how to do it,he went to her for help._____ _____how to do it,…….可否直接用Didn't know how to do it,…… .还是Not knowing how to…….Because he didn't know how to do it，he went to her for help.句型转化为 __ didn't he know the sun (rise) in the east? he didn't know what to do .反义文句 He didn't know a world of English.翻译, He didn't know which hat was his.还是应该用：He didn't know which hat his was. he didn't know how he can get to the museum改为简单句I have never read ____ _____ ______ _______(如此有趣的故事). He didn't know _____ he should go or not.A.if B.weather C.that D.whether选什么?快 I didn’t know