【单选题】—— What do you think of the play? —— Terrible! I,ve never seen _____ one.
【单选题】You ' ve never seen such a wonderful film before,______?
【多选题】关于高压气体瓶存放及安全使用,正确的说法是( )
B.
使用钢瓶中的气体时要用减压阀,各种气体的减压阀可以通用
D.
气瓶应存放在阴凉,干燥远离热源的地方,易燃气体气瓶与明火距离不得小于10m
【单选题】---Why are you staring? ---I ’ ve never seen_______tree before .
【单选题】-You ’ ve never seen dinosaur eggs, have you ? --_____. How I wish to visit the Dinosaur World.