jack's grandfather doesn't know how he should use a computer

jack's grandfather doesn't know how he should use a computer Jack's grandfather doesn't konw how he should use a computer ___ several times,but he still doesn't know how to use the c use, how,he,Internet,the,doesn't,to,know 连词成句 he's doesn'n know if he should bring a present 翻译 she doesn't know how to use the recorder.改为同义句she doesn't kn she doesn't know how to use the recorder.同义句：she doesn't kno （ ）He doesn't know ( ).A.what to do.B.what he can do .C.how he doesn't know (what should be taken) to start a business h 不好意思问一下 a, he ,know, if, bring, be, present, should, doesn't he doesn't know He doesn't know how he can get it.改为同义句 He doesn't know how