It's possible she misunderstood you./ She ... you.

Where's Sam? Perhaps he's hiding in the wardrobe./ Where's Sam? He .... in the wardrobe.

I'm sure they don't know the rules of they game./ They ... the rules of the game.

Perhaps they aren't willing to part with their dog./ They ..... to part with their dog.

Obviously, they were trying to deceive you./ They ..... to deceive you.

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!

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.

I'm convinced he did it intentionally./ He ... intentionally.

I'm sure he didn't realise the consequences of his actions./ He .... the consequences of his actions.

I'm sure I locked the door!/ I .... the door.

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!

Perhaps she was planning to sell all the jewellery./ She .... to sell all the jewellery.