Guessing What Happened

Question 1

The office lights are still on at midnight, and several computers are running. Someone _____ working late to meet the project deadline.

Options: must be, can't be, might have been

Question 2

Tom's desk is completely empty and his nameplate is gone. It's possible that he _____ resigned or been transferred recently.

Options: must have, might have, can't have

Question 3

Security footage shows Sarah on a flight at 3 a.m., while her laptop was locked in the office. She _____ edited the file herself at that time.

Options: might have, can't have, must have

Question 4

The conference room has extra chairs, but it may be for a meeting or tomorrow’s training. They _____ expecting a large group today.

Options: must be, might be, can't be

Question 5

Jake's computer is locked and his coffee is cold, but a colleague may have brought the coffee earlier. He _____ away from his desk for quite a while.

Options: must have been, might have been, can't have been

Question 6

Maria's out-of-office reply says she's away all week and not checking emails. She _____ on annual leave this week.

Options: might have been, must be, can't be

Question 7

David logged in from home this morning and said he has a high fever. He _____ feeling well enough to come to the office today.

Options: can't be, must be, might have been

Question 8

There are three candidates waiting outside the HR office, interview schedules posted on the door, and staff calling candidates in one by one. The company _____ conducting interviews today.

Options: might have, must be, can't be

Question 9

The financial report has been revised three times this morning due to multiple corrections and inconsistencies. There _____ some errors in the original version.

Options: must have been, can't be, might be

Question 10

Rachel's project folder contains several unfinished designs with no dates. She _____ experimenting with different ideas before choosing the final one.

Options: must have been, can't have been, might have been

Question 11

The security log shows the alarm was deactivated and work was completed before Monday morning. Someone _____ over the weekend to finish urgent work.

Options: must have come in, might have come in, can't have come in

Question 12

The contract was signed quickly, but the client has not discussed a start date. The client _____ eager to begin, though we cannot be certain yet.

Options: must be, might be, can't be