II. Encircle the adverb used in the sentences and write whether the adverbi adverb of Intensity or frequency.
11. I sometimes feel bored in our house. 12. He is often late for work
13. We seldom see his father.
14. To achieve good grades in exams: you should be extremely attentive in class. 15. The two planes came pretty close to each other:
16. I strongly recommend exercise for good health.
17. The responsibility of making a class project lies completely with the group members.
18. We take a vacation at least once a year. .
19. My dentist told me to brush my teeth at least twice daily.
20. When do you usually go on vacation each year?​