________ you e to Beijing, don’t forget to call me first.
Was it in the library ________he often went to do some reading ________he met the pretty girl?
Graduation is a good time to thank those who have helped you ______ the tough years.
To deal with the global financial crisis, China has _______ a string of forceful measures over the past months.
. During the reconstruction of the city, many modern tall buildings went up ______ old shabby houses were torn down.
Faced with a bill for $10,000, _____.