Could/ couldn't

Could/ Couldn't

Rewrite each sentence using could but keeping the same meaning.Fill in all the gaps, then press "Check" to check your answers.

1. There's no way that Mike knew about our plans.

about our plans.

2. That was a really bad idea. When you did that, you almost caused an explosion.

an explosion.

3. I was going to stay up late but in the end I went to bed at 10.

but in the end I went to bed at 10.

4. There was a terrible traffic jam so it was impossible to get here any earlier.

any earlier- there was a terrible traffic jam.

5. Even if he had studied, that exam was impossible to pass.

that exam even if he had studied.