Japan and other countries have taken action ________ prevent nuclear radiation (核辐射).
Although we have learned English for 3 years, we still have trouble _____ the new words.
—I want to be a doctor. —Doctors _____ greatly in every part of the world, I think.
Mike will go abroad tomorrow. I am going to _____ at the airport.
_____ you do, I will be on your side.
—Excuse me. What did you say you would like to do, Miss White? —I said I’d better go back to the office. I ______ somebody this afternoon.