Answer:
36. Ayutthaya <u>had been</u> a former capital of Thailand from 1350 to 1767; it <u>is </u>and interesting historic spot now.
had → HV
been → LV
is → LV
37. Large numbers of tourists from Bangkok <u>love</u> Ayutthaya. → AC
38. Ayutthaya's main attraction <u>is</u> its calm atmosphere. → LV
39. The invading Burmese army <u>ruined</u> Ayutthaya in 1767. → AC
40. The ruins <u>offer</u> the visitors a glimpse of old Ayutthaya with over 400 magnificent Buddhist temples. → AC
Explanation:
Among the different types of verbs, we can list action verbs, linking verbs, modal verbs, and help or auxiliary verbs.
As the name suggests, action verbs convey an action performed by a subject. For example: June <u>ran</u> back home.
A linking verb, on the other hand, does not convey an action. Its function is to simply connect the subject to a predicate. For example: John <u>is</u> a doctor.
Modal verbs are a type of auxiliary verb employed to express possibility, ability, probability or obligation. For example: I <u>can</u> swim. / You <u>must</u> go now.
Finally, auxiliary verbs are placed before the main verb with the purpose of helping it express its meaning, as well as indicate tense. For example: I <u>have </u>been tired lately.