30. He’s making_____great progress in his lessons that everyone else in his class can’t believe it.
The problem had become _____ in his mind, and he could not decide what to do about it.
No one helped me . I did it all _____ myself
—Can I speak to Mr. Wang , please ?— _______
I have many friends ,______ some are businessmen .
We haven’t enough books for ______ ; some of you will have to share .