He was so busy that _____ I could say hello to him he had rushed out of the room.
No bread eaten by man is as good as ________ got by his own labor.
— David has made some mistakes in the test. —________ , and ________ .
—Would you mind if I used your dictionary for a while?—_________
America is a country ________many different nationalities as well as one with foreign immigrants _______ the majority of its population.
Teenagers ______ social experience, so they are easily ______ when they first step into society.