I have an appointment ________ Dr.Smith,but I need to change it. (2013·北京,26)
–What do you think of your job, Bob?–Though ____ flexibility, it is a job____ you are doing something serious but interesting.
_____ such great trouble, the little girl didn’t know what to do.
The father as well as his three children _______ skating on the frozen river every Sunday afternoon in winter.
Ten years ago the population of our village was _________ that of theirs.
There are many islands _________ the Chinese coast.