Modals of speculation

• English
• Tertiary Education

She was a(n) ____ in the court case.

1. alibi
2. witness

They left no _____. they must've been wearing gloves.

1. fingerprints
2. trail

The knife and clothes were important _____ in solving the case.

1. marks
2. clues

Once you're caught, the police will keep ____ on file.

1. DNA
2. proof

The _____ of some DNA were still on the clothes

1. remains
2. footprints

The _____ left clear marks in the mud.

1. DNA
2. footprints

There was no ____ and very little evidence, so they let him go.

1. proof
2. mark

There were no ____ from the car on the road after the crash.

1. marks
2. clues

The _____ led the police to the body.

1. trail
2. fingerprints

What happened here?

Could / May / Might Have 

Can't have  + PP

Must have + PP

Explanation is possible 

Explanation is impossible 

Explanation is true 

John ____ on holiday. I saw him at yesterday.

1. must have gone
2. can't have gone
3. might have gone

The neighbours were playing music and there were balloons in the garden last weekend. They _____ a party.

1. must have had
2. can't have had
3. might have have

John did really well on the exam. Sara thinks he ______.

1. must have cheatted
2. might have cheated
3. can't have cheated

He has a black eye.

He was very late to class.

She crying in the bathroom.

He looks uncomfortable and he's walking slowly.

She runs into the room looking excited.

During the night you heard two people shouting next door. Then you heard a loud bang and then it was quiet.

You went to a local shop at 9am and it was closed. It's normally open at that time.

You live in a house with a garden. Last night your cat didn't come home.

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