21. Babies are not born with _______moral sense; they can’t tell _________ difference between right and wrong.
A. the; the B. a; a C. a; the D./;/
22. With everyone ________, the team can’t go on with the project.
A. wearing out B. wears out C. to wear out D. worn out
23. If only I could buy a new CD but I ________ enough money.
A. do not have B. did not have C. will not have D. had not had
