The size of the generation gap seems to be spreading with ____ rapid changes in technology, in education, in transportation and in communication that are taking place all over ____ globe.
I ______ the boy to save the money, but he would not listen to me.
He has been in bed ______ he fell off his bike a week ago.
The time Dr. Wang has devoted _____ the disabled in the past five years is now considered_____of great value.
-----Are you sure that the party came to ______ power in ______1960s? -----Yes.
Once new difficulties _____ in our new job, we should learn to use our brains to solve them.