I don't know how____across the river yesterdayA.did he swim B.he swam C.does he swim D.he swims

I don't know how____(chat)on the Internet i don't know how____ ____play chess well.改为i don't know how to play chess well.的同义句 I don't know. “i don't know you know i don't know sorry,I don't know. i don`t know much I don't really know. 英语；I don't know I don't know miss I don't know him. I don't know now 翻译 i don't know So know,I don't I don't know her i don't know anything I know enough to know that I don't know i don't know what i I don't think I know you