选词填空(共9小题：每题1分，满分9分)

be bound to;   pay off;   cast down;   team up with;   keep up; out of the question;   be dying to;   take in;    in vain

 
Tom works hard as usual and it has_______. He got the first in the final.
The marriage based on money ___________ break up.
She was ________ by her husband’s sudden death and the loss of her pet dog.
It is a 79km round-trip that ________ all the famous tourist spots.
Both class 3 and our class won’t be able to finish the work unless we _____ each other.
We should _______ the good customs.
He is now so tired that to walk another mile is _________.
The students ________ know the result of the interview in the classroom.
The girl tried _______ to catch the butterfly on the flower.