Daily Life - Deducing Outcomes

Question 1

The deadline was yesterday, but the team has not submitted anything or replied. They _____ about it, although their system could also be down.

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

Question 2

The sales figures dropped by 50% this quarter despite increased marketing efforts. The new marketing strategy _____ as planned.

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

Question 3

The experiment produced unexpected results, but the cause could be the method or the equipment. There _____ an error in our methodology.

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

Question 4

The client approved the proposal immediately, but we do not know whether the presentation or the low price persuaded them. Our presentation _____ convincing.

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

Question 5

The factory is running at full capacity but profits are still declining. The problem _____ with production costs, but we need more data to confirm.

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

Question 6

Some of the files are missing from the report, so the assistant _____ all the data.

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

Question 7

They launched a nearly identical product with the same features just two weeks after our announcement. They _____ our plans somehow.

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

Question 8

The software update was released yesterday but the bug still exists. The developers _____ this particular issue.

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

Question 9

According to the cautious forecast, the training investment _____ worthwhile next year, though the outcome is not guaranteed.

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

Question 10

The warehouse inventory shows 500 units, but we only sold 200 last month. The remaining stock _____ from previous months, as no new inventory has been added recently.

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

Question 11

The research team published early, perhaps because they worked overtime or because the analysis was simple. They _____ working overtime.

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

Question 12

The supplier promised Friday delivery, but nothing has arrived. There _____ a shipping delay, or the parcel may be waiting at the local depot.

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