Many scientists say that it’s important for us to have ______ food in our diet.
How do you find that Beatles’CD?—Wonderful. It’s well worth ______.
We’d better put the sofa ________ the TV set so that we can watch TV comfortably in it. [ ]
If you _____ at noon, you ____ the feeding of animals.
is the weather like in Beijing now?– It’s ____________.