---Travelling by plane is _________ than travelling by train.---Yes, but it is not so ___________ as travelling by train.
I can play ______guitar,but I can ’t play _______soccer.
Jackie is only three years old __________ he can draw very well.
Gao Yan is__________ Zhao Fen and Li Min.
__________ chocolate isn’t good for you.
—How many __________ are there in your class? —Twenty-two.