The school made it a rule that the students should ______to their feet when class begins.
The Chinese Education Department suggests teachers should receive ______ education to catch up with the development.
I think whoever makes ______ contributions to the company than others should get ______ income.
—Are you satisfied with what he did? —No, it couldn’t have been ______.
If there were no examinations, we should have ______ at school.
—If you don’t like the red coat, take the blue one. —OK, but do you have ______ size in blue?This one’s a bit tight for me.