This is ______ key, and that is ________ orange. A. a; a B. a; an C. an; an
A:Do you think Tom will come to the party tonight? B:I don't think so. He has to ________the coming exam.
In China, money_______to children for good luck in the Spring Festival.
A:Why did you only order vegetables? B:The doctor told me________too much meat.
Lucy wanted to get the box of candy on the table, but she was_______reach it.
We should keep people from throwing rubbish into the sea______save the endangered sea animals.