Complete the 12 sentences below. Choose the best answer for each one. Some sentences have two correct answers. Choose both.
1Given the scorch marks around the socket, the fire ............... started with an electrical fault rather than a candle.
Wrong!
The clear evidence makes "must have" the best choice for a strong past deduction.
2He keeps checking his phone and smiling; he ............... heard some good news, but I'm not sure.
Wrong!
The phrase "may have" shows a possible past explanation without making it certain.
3If the meeting ended at six, she lives two hours away, and it is only seven, she ............... be home by now.
Wrong!
The modal "can't" shows that being home now is impossible from the timeline.
4The lights are off and the curtains are drawn, so they ............... be asleep.
Wrong!
The modal "could" expresses a reasonable possibility rather than certainty.
5He ............... be serious, because he just offered to pay in Monopoly money.
Wrong!
The modal "can't" expresses disbelief about a present situation.
6She ............... taken the earlier train, because her ticket is stamped 07.12.
Wrong!
The strong evidence in the ticket stamp supports the past deduction "must have".
7If the server logs are accurate and every login came from an external IP address, the breach ............... come from inside the company.
Wrong!
The phrase "can't have" rules out a past possibility based on the evidence.
8Judging by the silence in the room, his joke ............... landed the way he expected.
Wrong!
The phrase "can't have" makes a negative past deduction from the room's silence.
9With that level of detail in her story, she ............... making it up on the spot.
Wrong!
The phrase "can't be" gives a strong negative deduction about the present action.
10He left without his coat in midwinter, so he ............... been in a rush.
Wrong!
The phrase "must have" gives a strong past deduction from clear evidence.
11If she really wanted to avoid attention, she ............... worn such a bright red suit.
Wrong!
The phrase "wouldn't have" fits a past hypothetical inconsistency.
12The report is unsigned and the formatting is inconsistent, so it ............... be a draft.
Select 2 answers.
Wrong!
Both "might" and "could" express plausible speculation without too much certainty.
Done.
Score: 0/12
Answers
- Given the scorch marks around the socket, the fire must have started with an electrical fault rather than a candle.
- He keeps checking his phone and smiling; he may have heard some good news, but I’m not sure.
- If the meeting ended at six, she lives two hours away, and it is only seven, she can’t be home by now.
- The lights are off and the curtains are drawn, so they could be asleep.
- He can’t be serious, because he just offered to pay in Monopoly money.
- She must have taken the earlier train, because her ticket is stamped 07.12.
- If the server logs are accurate and every login came from an external IP address, the breach can’t have come from inside the company.
- Judging by the silence in the room, his joke can’t have landed the way he expected.
- With that level of detail in her story, she can’t be making it up on the spot.
- He left without his coat in midwinter, so he must have been in a rush.
- If she really wanted to avoid attention, she wouldn’t have worn such a bright red suit.
- The report is unsigned and the formatting is inconsistent, so it might / could be a draft.
