While(cross)__the street,I saw someone waving to me

While(cross)__the street,I saw someone waving to me Be careful ------you ----the roadA.while,cross B.when ,cross C.while ,across理由 在10月31日的英文翻译（不要缩略形式）__the 31st __ October While I ------(cross) the street,I ------(hear) someone -----(call) me. While(cross)___the street.I saw someone waving to me. 解释下面这两个while循环的区别解释下面两个while 循环的区别while ( st++ )++cnt;while ( *st++ )++cnt; Cross cross cross cross, cross cross cross St. ST. we can make a fire __the room warm thatwe can chat for a while用keep的什么形式?为什么? he left for lunch __the clock __twelve.A.while ,hit B.immediately；struck C.right away；beat Don't run __the street while the traffic lights are red?A.through B.over C.across