— My colleague felt quite happy because his solution was closer now to ______．
— Congratulations!

It is illegal for a public official to ask people for gifts or money ________ favors to them.

He invited me to a dance after the show ________ Christmas Eve.

Would you mind not picking the flowers in the garden？They are ________ everyone's enjoyment.

Nowadays some hospitals refer to patients ________ name，not case number.　　　　　　　　　　　　　　　　　　　

It was a pity that the great writer died _________his works unfinished.

Japan is ____ the east of China, while India is ____ the west of China.

The chickens will provide us _______ feathers, ______ we can make use for cleaning the table and benches.

Riding bikes has advantages __________ driving cars ________ many aspects.

During the examination we are required to stay in our seats, keep our eyes on our work,      to anyone.