— You seem busy these days.— Yes. I’m writing a story. You know, it’s really not easy to write ______ with attractive plots.
In this composition spelling mistakes ______ while grammatical ones are not so obvious.
Topics for textbooks and conference books should be_______ to the experiences and interests of the students.
We spent many years studying the formation of rocks ,.experiencing many sufferings and even dealth .But our hard work _____in the end, and we made it.
She don't know how she ____ the first couple of months after her husband’s death.
Keep an optimistic and positive attitude — Don't put yourself to any _____