The Browns usually drive to the park on Sundays. But today they go to the park_____ foot.
When you have difficulty, do remember to _________. Two heads are better than one.
-I haven’t seen the film Pirates of the Caribbean: On stranger Tides. -___________.
-What do you think of the four classics (名著)of China? -I hear that they are wonderful, but I’ve read _______ of them.
Today, we have many other ________ to pay besides coins or paper money.
Humans are cutting down the forests to ________ the land for other uses.