The ability to _____ one another for past wrongs is one of the greatest attributes that anyone should possess or exercise.

—How did your father　　　　smoking?—The doctor told him to do so，and he took the advice.

 Although Rose is very busy, she still ____ a lot of time to her students in her spare time.

 I'm interested in a single room. Do you have any ________？

The computer system _____suddenly while Paul was searching for information on the Internet.