Complete the 12 sentences below. Choose the best answer for each one. Some sentences have two correct answers. Choose both.
1Given the security footage, the intruder ............... entered through the side door, not the front.
Wrong!
The evidence supports a strong past deduction, so "must have" is correct.
2If you want access to the archive, you ............... sign the confidentiality agreement first, no exceptions.
Wrong!
The phrase "no exceptions" shows a rule, so "must" is correct.
3He ............... be in the lab right now because his car is still in the car park.
Wrong!
The speaker is making a strong present deduction from evidence, so "must" is correct.
4You ............... submit the ethics form today, but it would speed up the approval process.
Wrong!
"Needn't" shows there is no obligation, and "but" introduces the benefit of doing it anyway.
5The lights are off and the blinds are down, so they ............... be holding a meeting in there.
Wrong!
The evidence makes the meeting seem impossible, so "can't" is correct.
6To comply with the new policy, staff ............... wear their ID badges at all times on site.
Wrong!
The policy creates an obligation, so "have to" is correct.
7I ............... have misread the email, but the deadline seems to be next Friday.
Wrong!
The speaker is uncertain about a past possibility, so "might" is correct.
8You ............... park here after 6 p.m., according to the sign by the gate.
Select 2 answers.
Wrong!
A sign can give permission, so "may" and "can" are both correct.
9If the server logs are accurate, the outage ............... been caused by a configuration change, though a hardware fault is also possible.
Wrong!
The sentence gives a possible past cause, so "could have" is correct.
10You ............... disclose client data to anyone outside the team, even if they insist.
Wrong!
This is a strict prohibition, so "mustn't" is correct.
11With that accent, she ............... be from Dublin, though she never says where she grew up.
Select 2 answers.
Wrong!
The speaker is making a possible inference, so "could" and "might" are both correct.
12To enter the clean room, visitors ............... wear a lab coat at all times.
Select 2 answers.
Wrong!
This is an entry requirement, so "must" and "have to" are both correct.
Answers
- Given the security footage, the intruder must have entered through the side door, not the front.
- If you want access to the archive, you must sign the confidentiality agreement first, no exceptions.
- He must be in the lab right now because his car is still in the car park.
- You needn’t submit the ethics form today, but it would speed up the approval process.
- The lights are off and the blinds are down, so they can’t be holding a meeting in there.
- To comply with the new policy, staff have to wear their ID badges at all times on site.
- I might have misread the email, but the deadline seems to be next Friday.
- You may / can park here after 6 p.m., according to the sign by the gate.
- If the server logs are accurate, the outage could have been caused by a configuration change, though a hardware fault is also possible.
- You mustn’t disclose client data to anyone outside the team, even if they insist.
- With that accent, she could / might be from Dublin, though she never says where she grew up.
- To enter the clean room, visitors must / have to wear a lab coat at all times.