请英语高手看几道单选,求答案及解释,多谢!33、When______thismachine,youmustreadtheinstructionsfirst.（1分）A、useB、usingC、touseD、havingused34、Thatpapermustbehandedinbynextweek,somakesure______
<p>问题：请英语高手看几道单选,求答案及解释,多谢!33、When______thismachine,youmustreadtheinstructionsfirst.（1分）A、useB、usingC、touseD、havingused34、Thatpapermustbehandedinbynextweek,somakesure______<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">施涌潮的回答：<div class="content-b">网友采纳 33B34Cmakesure确保,跟从句35D不定式作状语36A37Bclearup打扫干净,makeclearmakeuseof使用,giveanaccountfor说明38D意思是不可能完成做某些事40Bregardsthas把sth视为------41D感觉也...
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