21. --- Look! _______good time the students are having on the playground!
--- Yes, they always have ______ great fun in their PE lessons.
A. What a; £¯ B. What; a C. What a ; a D. What; £¯
22. Nobody except Li Ping and Liu Ying ______ at school this time yesterday.
A. are B. is C. was D. were
23. Since you are in trouble, why not ______ our offer of help?
A. receive B. accept C. refuse D. make