Be sure to board the bus by 9 sharp.by 9

Be sure to board the bus by 9 sharp.by 9 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 No one can be sure ___ the board will accept our condition A.that B.whether C.why D.what When you leave,____to turn off the lighta be sure b make sure c making sure d to be sure be sure of 和 be sure to be sure to do tom went upstairs again to ()the door was looked .A be sure B make sure C be sure of 用Be sure to、Be sure to do 、Be sure of、Be sure that 造句 翻译这句话：Be sure to make the trees straight. The maid has to make sure the refrigerator is full of food, the ____full of clean linen and the beds changed regularly.desk cup board cupboard So many diretors being absent,the board meeting had to be put off.是什么语法句式? She was the first woman to be appointed ________ the board.A as .B in C on D to The print is still wet.______!A) Be not sure to touch it B) Be sure not to touch itC) Be sure to not touch it D) Don’t be sure to touch it 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 do sth. be sure to go there they are sure to be