What's that terrible noise? I'm sure our neighbour is using his precious drill again!/ What's that terrible noise? Our neighbour ... his precious drill again!
must be using
You're flat broke?! It's impossible to spend so much money within a day!/ You're flat broke?! You ..... so much money within a day!
can't have spent
Beth isn't at home. Perhaps she's gone for a walk with her dog./ Beth isn't at home. She .... for a walk with her dog.
might have gone
Perhaps he lied to you./ He ... to you.
might have lied
I'm sure she didn't mean any offence./ She .... any offence.
can't have meant
I'm sure I locked the door!/ I .... the door.
must have locked
I'm sure they distributed all the leaflets. / They .... all the leaflets.
must have distributed
It's possible she misunderstood you./ She ... you.
might have misunderstood
I'm convinced he did it intentionally./ He ... intentionally.
must have done
I've seen Jim here several times. I'm sure he lives somewhere in the area./ I've seen Jim here several times. He .... somewhere in the area.
must live
It's so quiet in the house. I'm sure the kids are playing outside./ It's so quiet in the house. The kids .... outside.
must be playing
I'm sure they don't know the rules of they game./ They ... the rules of the game.
can't know
I'm sure he didn't realise the consequences of his actions./ He .... the consequences of his actions.
can't have realised
Perhaps she was planning to sell all the jewellery./ She .... to sell all the jewellery.
might have been planning
Perhaps they aren't willing to part with their dog./ They ..... to part with their dog.
might not be willing
Perhaps they don't know whether to stay or go./ They ..... whether to stay or go.
might not know
Obviously, they were trying to deceive you./ They ..... to deceive you.
must have been trying
Where's Sam? Perhaps he's hiding in the wardrobe./ Where's Sam? He .... in the wardrobe.
might be hiding
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