The fact that people are afraid to go out at night is often a result of perceived (感知) danger ________actual danger.
. There are many black clouds. It is _______ to rain again.
. He was in poor health, so the doctor ___________ him to drink wine.
. The moment she came back from work, she _______ to clean the kitchen thoroughly.
. You must put your heart into what you are doing, or you ________ your aim.
. Having been attacked by terrorists, _________.