Identify the tenses that are used in THIS sentence.

Question

76. The owners must have installed the equipment 20 years ago.
A: Present perfect in the passive voice
B: Past tense with a modal
C: Present continuous with a modal.
D: Future perfect in the passive voice
Answer: D

Answer 1

D is incorrect. There is nothing future about the verb in sentence D.

Again, please define "modal" for us.