 | ,选A是对的,原因是因为作者讲的是一个一般的事实,过去如此,现在如此,将来也会如此,所以用一般现在时,正象你说的这是种习惯,经常有的。约定俗成的。所以选一般现在时、主将从现只用于---主句从句都是讲将来的事情,为了简练而省略从主的will...。31. I bet Mrs. Black will come to help us with the celebration if she ______too busy tomorrow.A. is B. will be C. won€t be D. isn€t【答案】D 主将从现。(2010•吉林省通化市)32. --Could you tell me when Mr.Li ______in Huanggang? --Sure. When he _______, I€ll call you. A. arrives; will arrive B. will arrive; arrives C. arrives; arrives D. will arrive; will arrive 【答案】B主将从现。(2010•湖北省黄冈市)
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