,Unit9 Numbers,How many pens are there?,11,Eleven pens,11,How many _ _ _?,cows,are,there,eleven,How many _ _ _?,Turtles(海龟 ),are,there,12,How many _ _ _?,cars,are,there,13,thir-teen,How many boys are there?,14,How many pears are there?,How many _ _ _?,horses,are,there,15,fif-teen,How many rabbits are there?,16,six-teen,How many ducks are there?,17,How many _ _ _?,pencils,are,there,18,eigh-teen,How many bikes are there?,19,nine-teen,How many _ _ _?,ants,are,there,thir-teen,eigh-teen,seven-teen,six-teen,fif-teen,four-teen,nine-teen,twenty,twenlve,eleven,revision,thank you everyone !,