—I have a toothache.—You should _______.A.drink lots of water B.take a rest C.see a dentist
— ________ have you learned to play the piano? — ________ five years ago.
—I'm going to visit Yellow Mountain with my family this weekend. — ________.
Don’t worry! I’ll do what I can you when you are in trouble.
—I have never been to African countries. What about you? — ________.
—Do you think if Tom the work well? —I think he will if he his best.