4. Choose the correct form of the adjective.
1. My car is than yours.
a. faster b. fast c. the fastest
2. It is the book of the three.
a. interestinger b. interestingest c. the most interesting
3. Maths is than History.
a. more difficult b. difficulter c. the difficultest
4. Paula is the girl in the class.
a. pretty b. prettiest c. most prettiest
28. 1. Have been digging 2. Have you been waiting 3. Have been standing 4. Have you been learning 5. Has been studying 6. Have you been running 7. Have been living 8. Have you been crying 9. Have you been doing 10. Have the children been sleeping