【单选题】Jack: Hey, how are you, Susie? Gee, we haven't seen each other in... It must be close to three years! Susie:______ Jack: OK.
C.
Fancy meeting you here.
D.
Well, how have you been?
【单选题】以下哪一项是混凝土强度等级的依据( )?
【简答题】师徒二人要加工同样多的零件,当师傅完成任务的一半时,徒弟完成了任务的 。照这样的效率,师傅完成任务时,徒弟加工了80个零件,那么师傅加工了( )个零件。
【简答题】Our new ____ (外国的) students are going to arrive very soon, and here are some ways to communicate with them politely. How close do you stand when you ____ (和......交谈) a friend? You can stand close to p...