if you (be not)careful enough in the exam ,you will not get a goo_英语解答

if you (be not)careful enough in the exam ,you will not get a good garde.
什么形式?为什么

人气：350 ℃　时间：2020-02-01 00:06:29

解答

aren't 【if 引导的条件状语从句,主将从现】