Complete the rules with the given words

• long
• Continuous
• interrupted
• Simple
• -ed
• second
• Ving

Here's a brief explanation of the rules of using Past Simple and Past Continuous in one sentence. In this sentence there are two verbs:

I was doing my homework when the phone rang.

         The first action is a             [ ] action — it lasted for a period of time. Therefore we use Past             [ ].

         The second action is a short action that has             [ ] the first one. So, we use Past             [ ]. 

        Past Simple is formed using '            [ ]' ending or the             [ ]form of the verb.

        Past Continuous is formed using was/were +             [ ].