After the patients went into the office,__working.
As a young man, there was __________ time __________ I hated to go to school .
—I am leaving for the States tomorrow, Caroline!—______
As we all know, many Chinese words have come into English, _____ typhoon, tofu and kung fu.
If better use is _______ of your spare time, you’ll make great progress in your study.
A number of books in the library ___been stolen so that the number of them___ smaller than before.