Present/past speculations

Violet ... the key because I can't find it

It was very popular song and people ... it a lot because the radio played it every day

He's been playing that computer game all day. He ... it a lot

Does your aunt like modern art? You ... her to the new art gallery next time she visits you

I don't know how she managed it. I guess she ... the problem by accident

The rivers and lakes are almost dry in this region. It ... for a long time

Ann's good with computers. She ... your problem - just ask her

There are some dark clouds in the sky. It ... later

All the passengers got off but Ann wasn't there. She ... the train

They ... this way because there are no footprints in the snow

Paul isn't here. I suppose he ... stuck in traffic or got lost on the way

I'm sure you ... a UFO land on the field