21. He was badly hurt last night. That is _____ he didn’t come to school.
A. because B. that C. why D. what
22. No one likes _____ in public.
A. being teased at B. being laughed for C. teased D. being made fun
23. No one can _____ how to deal with the matter.
A. make up B. figure out C. put off D. take up
