My job is to clean the street为什么要用to do而不用doing?具体说明.my favo

My job is to clean the street为什么要用to do而不用doing?具体说明.my favo my job is to make the street clean 和my job is making the str it is my job doing/ to do? my job is to do 还是doing My job is cleaning the classroom.和My job is to clean the cla My job is_(clean)the street 类似my job/ambition/dream is to do sth 或doing sth 或to doing st My job is to teach English?为什么要用to It is your job to keep the street 是加clean吗,为什么 My job is clean the blackboard.We hope you to go to the park It is my aunt,s job ( )the park clean . A.keep B.keeps C.to My job is clean the windows