Some people feel easy and comfortable to be served by others but when they are asked to serve others ______, they are unwilling or even hate to do so.
The stubborn boy didn't __________ so he missed the chance.
The post office is quite __________.
To understand the grammar of the sentence, you must break it __________ into parts.
I feel __________ necessary for her to learn foreign languages because the job she will do is __________ to foreign business.
They are good friends and share __________ with each other.