if i don't know how to swim------------.

if i don't know how to swim I really don't know ____ .A.to swim B.how to swim C.to swim i don't know how to swim.i decided what to buy.这两个句子里面的how t I don't know how to I don't know if it------tomorrow,but if it-----,I'll go swim 句型转换,1、I don't know how I can swim well(改为简单句)I don't know ( I don't know how I can swim well.（改为简单句） I don't know ______ how can i know if you don't IF YOU DON‘T KNOW HOW TO SPEAK IN ENGLISN； how to play basketball?I don't know.who know? I don't know l how I can swim in the river同义句转换 i don't know how to deal with it同义句 i don't know ( )( )( )(