40. After he (past perfect of lie) there a few minutes, he suddenly (past of sit) up.
41. The biplane, which (past perfect progressive of lie) in the hangar since it (past perfect passive of raise) from the water in which it (past perfect of lie) for two weeks, (past of rise) up over the city.
42. Large crowds (past progressive of sit) on the fields, (present participle of wait) for the aeroplane (infinitive of rise).
43. Many people (past perfect of set) tents on the field during the night and now (past progressive of get) a good view of the flight.
44. All eyes (past progressive of turn) toward the aeroplane, which (past progressive of rise) steadily.
45. The biplane (past of rise) until it (past perfect of rise) about five hundred feet above the tallest building; then it (past passive of raise) about fifty feet more to get it out of an air current that (past progressive of raise) one end of it.
Exercise 121—Infinitives and Participles
Infinitives are verb forms that are used as nouns, as adjectives, or as adverbs. Participles are verb forms that are used as adjectives. Thus at the same time each acts as two parts of speech. As verbs both have the meaning of the verbs from which they are made; both have tense and voice; both may be modified by adverbial expressions; and, if they are made from transitive verbs, both may take objects.
The Participle
The tenses and voices of the participle are as follows: