We should sleep ______eight hours a day, or it’s bad for our health.A. at most B.least C. at least
—What’s the matter, Tony? —I have ______fever.
—My mother has a backache in hospital —_________________.
—We’re going to Mountain Yandang this weekend. — _____.
These words are important. Please .
When you have difficulty, do remember to _________. Two heads are better than one.