Question

MArk stayed up very late last night watching a movie, and today he is very tired. He ________ up so late; it was a bad idea. Question 72 options: a) shouldn't have stayed b) must not have stayed c) couldn't have stayed d) should have stayed

Answer 1

A

Step-by-step explanation:

it makes the most since in the past tense form

Answer 2

'a' sounds right for me!