Teachers have to constantly update their knowledge inorder to maintain their professional ____.

______ you Chinese–No, I ______ English.

Tom is in good health, because he often exercises and eats a lot of healthy .

I missed the beginning of ________ cartoon The Lion King.—What a pity! You should leave school half _______ hour earlier.

What do you think of the film Jurassic Park in 3D?—-It is .