PeriodSixGrammar基础落实Ⅰ.句型转换1．Itisnecessaryforcollegestudentstomasteratleastoneforeignlanguage.Itisnecessarythatcollegestudents________atleastoneforeignlanguage.2．Withoutsunlight，therewouldbeneitherplantsnoranimals.________________________________sunlight，therewouldbeneitherp...

时间:2024-10-09 12:42栏目:中学教育