—Mr. Smith, why are you always asking me to do the difficult work?—Because you _______ do such a thing and nobody else is fit for it.
________quite well in the important exam,he came back home,________and smiling.
Hearing the news,she rushed out,________the book ________on the table and disappeared into the distance.
---What in the world put you in a really bad mood? --- ________in the traffic for hours.
In the next five years,the government's work will be evaluated________on people's happiness level instead of GDP alone.
________the young man is in great need of a computer in his work is known to his boss.