– Our teacher often tells us ____and make our class full of ______.-That sounds great.
—Would you like an icecream,Diane?—No,thanks.I ____ eat them.They're bad for my teeth.
—Did you find the small village yesterday?—Yes,without any difficulty,for it has ________ changed over years.
Mrs Smith lives in such a big house without a child around.So she feels very ___.
This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?
Nearly _______of the earth___covered by sea.