7.I don’t know.How do I use commas?（变成一个复合句） I don’t know I use commas.I don’t know怎么写?

I don't know how to i don't know how to 7.I don’t know.How do I use commas?（变成一个复合句） I don’t know I use commas.I don’t know怎么写? I don't know how d___ the task is ,but I'd like to try how to play basketball?I don't know.who know? I really don't know ____ .A.to swim B.how to swim C.to swim how D.how swim I don't know ___to deal with such matter?A:what B:how C:which D/ I don't know ( ) the fashion shop is.A.where B.when.C.how D.what I don't know _____to send e-mail.A.how B.what C.which D.who i don't know how ＿_commoas.A.use B.to useC.used D.using Don't know what i'd do i don't know how to do it句型转换i don't know[ ][ ][ ]do. i don't know how与 i don't know why有什么区别? i don't know how i feel的中文 I don't know how can I ask questions? 英语翻译i don't think i know how.. I don't know.Do it how can i I don`t know how to have fun.(同义句） I don`t know how to have a good time.I don`t know how to()(