Grammar Challenge: Find and correct the mistakes

Sam’s face was red because he had been running for an hour.

We only just missed the train. If we had walked more quickly, we would have caught it.

Sara persuaded us to try that new restaurant and we were glad we went.

Mike isn’t here. I think he might have gone to the park to try out his new bike.

If I hadn’t lost my umbrella, I wouldn't be so wet now!

We won’t be able to get home unless there is a train after 10 pm.

If you don't water plants, they die.

Dominic admitted taking the money, but he denied stealing the watch.

I’d let you use my mobile if I had brought it with me.

If I could travel anywhere in the world, I would go to Cambodia