they didn't know what exactly happened,they only heard what_

英文翻译问题：I don’t think they even know what exactly their relat They didn't know what they should do to deal with the proble don't,happened,three,ago,what,to,they,know,them,seconds.怎么连 didn't they know the apponited time They didn't know _____their holiday? They don't know what--- People don't say exactly what they mean. 组成句子student,what,wanted,some,didn't,future,be,they,know,in t students,what,wanted,some,didn't,future,be,they,know,in,the, The students stood there and didn't know what they should do They didn't know _____ to do A who B when C what D where They didn't know ( ) with the machine.A what is the matter.B