I always forget some news . I am very upset. and don' t know _______ . A. how to do. B. when to do. C. what to do .
—We’ll study in different schools next term. Enjoy your time in the new school! —______.
Today, the forests have almost gone. People must ______down too many trees.
Eddie is very lazy. He prefers _________ to ___________ .
—This Math problem isn’t easy for Jack to work out, is it? —_______. He is far better at Math problems than we expected.
—Were your parents at home last night? —No. _______ of us went to my uncle’s birthday party.