Question

Now, complete these rules!

1. We use + past participle to say that an event or situation was possible in the past.

2. We use + past participle to say we are sure something didn't happen or was impossible in the past.

3. We use + past participle to say we are sure that something happened or was true in the past.

Answer 1

1. We use + past participle to say that an event or situation was possible in the past