If you don't know the word, you can _____ in the dictionary.
A. look it after B. look it up
C. look for it D. look at it
_ _ is really hard __ them to climb Mount Tai.
A. This, to B. It, for
C. This, for D. It, to
My brother ______ works in that factory .He has become a bus driver.
A. not longer B. not any longer
C. no longer D. not any more
The classroom _______by her every day
A. cleans B. is cleaned
C. is cleaning D. are cleaned .
China is ______the Great Wall.
A. famous as B. famous to
C. famous for D. famous at
The chopsticks are made _____wood. And they are made ______China.
A. from, in B. of, in
C. of, by D. by, in
