【導(dǎo)讀】12:kitty,let’sstartwithyou.17:ice—icedfreeze—frozenfrighten---frightenedoperate---operation. 4:Iknow___(none/neither)ofthetwins.7:whenwaterboils,it_______(turnsinto;turnsto)steam.5:thenewtermising,tomshould___it.13:___awaterboat,weneedapapercup,astraw,sometape,etc.