Complex and compound sentences.
1d) was designed (long time ago so past tense)
2d) Has been repaired (It is still going on the present, this year)
3c) Had discovered (He discovered America long time ago)
4a) To have worked (worked long ago when he was young)
Hope it helps!
Answer:
See below
Explanation:
It forms a noun, such as planetarium or aquarium
The entire ship's crew is vulnerable and scared, and Rainsford is saying it's all just imagination but everyone is susceptible
