15. —Why is Mr. Li so happy this morning? —Because he was honored with a(n) ____ for excellence in teaching.
We can't _____ one to change the habits of a lifetime in a short time.
. On turning the corner, we saw the road _____ steeply.
American women were _____ the right to vote until 1920 after many years of hard struggle.
Roses are quite _____ flowers in English gardens.
. There are three basic ways of _____ language to writing, and all known graphic systems use one or a combination of these.