Be sure to close the windows是不是祈使句?可不可以写为Being sure to close the windows

Be sure to close the windows是不是祈使句?可不可以写为Being sure to close the windows I felt sure I would never be able to close the case again.从句是不是虚拟语气 请问：i fell sure i would never be able to close the case again. 句子 sure做什么词性,修饰什么? 这道题是不是选A啊Be sure to tell Joe —— come too close to the horses.[ A ]don't [ B ]not to [ C ]not 这道题是不是选A啊Be sure to tell Joe —— come too close to the horses.[ A ]don't [ B ]not to [ C ]not 根据句意,用open、close、turn on、turn off的正确形式填空Be sure to( )the gas when you leave the kitchen. ★请讲讲这句话中would的用法★I felt sure I would never be able to close the case again. Are you _ the answer to the question?A.sure B.sure to be C.sure to D.sure of make sure 和to be sure的区别________ where the public phones areA:Making sure B:To be sure C:Make sure D:being sure When you leave,____to turn off the lighta be sure b make sure c making sure d to be sure be close to造句 be close to doing. be sure of 和 be sure to Be ----to close the windows before you leave. Could you be so kind as to close the window? be sure to do be close to 中的 close 是什么词性? tom went upstairs again to ()the door was looked .A be sure B make sure C be sure of