30.If he __harder,he will catch up with us soon.A study B studies C will study D studied.顺便说明理由..

30.If he __harder,he will catch up with us soon.A study B studies C will study D studied.顺便说明理由.. He would,if he could if he does,so___I He told as if he knew everything.还是He told as if he had known everything. He looks as if he is ill为什么用if 、 if he was fired for he he He I don't know if he will come tomorrow i think he if he free looks as if he was dead 和he looks as if he is dead的区别. If he _____(know) that,he would tell you. he can speak english better if he p___ more. if he plays well he will get into the team. If he ( )free tomorrow.he will go with us He wonders if he passed the exam,【同义句转换】 He may come here if he ______ (be) free tomorrow. He always (watch) Tv at home if he has home