Be sure to let tom know the notice as soon as he_____ A will arrive B arrives 为什么A不对

像Be sure to let Tom know the notice这样的句子中sure后的是什么从句 Tom,be sure to come on time. Be sure to let tom know the notice as soon as he_____ A will arrive B arrives 为什么A不对 be sure to let tom know the notice as soon as he 为啥选C---A.will arrive B.was arriving C.arrivesD.arrived.请详细一些, tom went upstairs again to ()the door was looked .A be sure B make sure C be sure of 选择填空 ()1.Be sure to let Tom know the notice as soon as he （ ）.will arrive was选择填空()1.Be sure to let Tom know the notice as soon as he （ ）.A.will arriveB.was arriving C.arrives()2.When summer（ ）,some children will go to the be sure of 和 be sure to be sure to do 1.Be sure to let Tom know the notice as soon as he_________.A.will arrive B.arrives C.arrived2.Could you help me with my English from now on?A.With pleasure B.My pleasure Be sure to tell Tom of the place and time of the meet! 用Be sure to、Be sure to do 、Be sure of、Be sure that 造句 -Tom isn't at school today.He ____ ill at home. -I'm not sure,let me call him. A may be B must be Tom is sure to come on time. be sure to do sth. be sure to go there they are sure to be Tom,____to come tomorrow A.is sure B.makes sure C.be sure D.will be sure make sure,be sure of ,be sure to do,for sure的区别