21. Listen! Do you hear someone for help?
A. calling B. call C. to call D. called
22. Father goes to the gym with us although he dislikes going there.
A. hardly B. seldom C. sometimes D. never
23. You buy a gift, but you can if you want to.
A. must B. mustn't C. have to D. don't have to
24. This coastal area a national wildlife reserve last year.
A. was named B. named C. is named D. names
