8.About 80 percent of the students in our school_____ been working on the program and about two-thirds of the work _____been finished.
_______Wale_______at school,he would gain much higher a salary.
She tried to_______laughing,but it didn’t work;the performer gave her an angry look at her.
I need_______stamp to complete my collection.Can you give me a hand?
Can you imagine_______such a mean person?
Before taking the action,you’d better_______a plan first.