It is possible that Mary has broken the window.

Mary (a)   the window.

I don't have my umbrella. I am sure I left it on the bus.

I (a)   my umbrella on the bus.

Tom doesn't have any money. I am sure he didn't buy this computer.

Tom (a)   this computer. He doesn't have any money.

I am sure the cats are fighting. They are always making so much noise.

The cats (a)   They are always making so much noise.

What is John doing? Perhaps he is trying to calm his mother down.

John (a)   to calm his mother down.

Tom has got red spots all over his back. I am sure he was stung by a jelly-fish.

Tom (a)   by a jelly-fish. He has red spots all over his back.

The plane is 5 hours late. I am sure the passengers are furious.

The passengers (a)   angry. The plane is 5 hours late.

Look at John's dreamy face. Perhaps he is thinking about his girlfriend.

John (a)   about his girlfriend.

I cannot see Tom here. Perhaps he is not living in this cabin.

Tom (a)   in this cabin.

He is alive. I am sure he hasn't had any serious disease.

He (a)   any serious disease.

I am sure Tom is not lying. He always tells the truth.

Tom (a)   He always tells the truth.

Perhaps Jane swam across the river. She swims really well.

Jane (a)   across the river.

Mary is very fat. It is not possible she is on a diet.

Mary (a)   on a diet. She is fat.

The Browns haven't bought train tickets. Perhaps they are going by car.

The Browns (a)   by car. They haven't bought train tickets.

This is an ancient vase . I am sure it costs a lot.

This vase (a)   a lot. It is ancient.

The fog was very thick. I am sure driving was very difficult.

Driving (a)   very difficult.

Perhaps the thieves are heading for the airport.

The thieves (a)   for the airport.

Why does John look guilty? Perhaps he did something reprehensible.

John (a)   something reprehensible.

I am sure the teacher didn't mean to be so rude.

The teacher (a)   to be so rude.