Tony is busy _______ his homework.
If you want to know the meaning of the word______, you’d better look it up in the dictionary.
—There’s ______ time left. You don’t need to hurry, Jack.—But I want to see her as early as possible.
Another thing that he _________ very difficult was English grammar.
We prefer ________at the party rather than______.
---- ______ you ______ a bus to school?---- Yes. But now I usually go to school on foot.