Please ____(work) hard at it.

Please ____(work) hard at it. Endlish is ( ).Please work hard at it. English is _______ .please work hard at it.A .help B.helps C work hard at hard 请从现在起努力工作 Please work hard _____ _____ ____ . this is ____ ,so we must ____ on it.A.a hard work;hard work I work hard at school.So ____(do)my brother our teachers always ____ us work hard at our lessons ____(只要)you work hard,you will be successful at I am going to work hard ____ it. school hard at work work hard on和work hard at