Bantu jawab kak pliss
1. a. wear
2. d. must be
3. c. must
4. c. must not
5. b. have to
6. d. should
7. d. shouldn't
8. a. should
9. a. don't disturb
10. a. plane
11. b. you are prohibited to active handphone
1. A
2. D
3. C
4. C
5. C
6. D
7. D
8. A
9. A
10. A
11. B