John is ______dishonest boy. He has______ useful book.

When did you go to bed last night—_______.

Smoking is so bad for his health that he doesn’t smoke _____ [ ]

ts in Senior 3 are under _____ great stress, because no one will take ____ risk of failng in the college entrance examinations.

.If you don’t know how to use an English word, the easiest way is to _____ a dictionary.