.—How can we go to the island twenty miles off the coast, sir?—I’m afraid you can’t get there ________ by boat.
The parents have the ____ to teach their children to follow all school rules.
We're going to be meeting there on a regular ____.
The elephant and the monkey went to the river, but the water was ____ and the monkey was afraid.
______ regular exercise is very important,it's never a good idea to exercise tooclose to bedtime.(2011 .天津)
Whatever is left over may be put intothe refrigerator,______ it will keep for two or three weeks.(2011 .安徽)