If he works hard he will study English_____will变一个字母

Tom will be successful______,if he works hard. if he study hard,he will ( ）learn English well.里面应该填什么? he works hard How hard he works.翻译 how hard he works是什么意思? He works as hard as______ he works hard,so he can _____? He is nice and he works hard . he is a hard worker.he works ( ). 1 .He is very old,____ he still works very hard.A.but B.if C He works hard.I think ________(最后)he will be a top student. And he must study hard