1. First: I got home.

    Then: I ate  dinner.

   a) Before I got home, I ate dinner.    

    b) After I get home, I ate dinner.   

    c) After i got home, I ate dinner. 

2. First: I took my clothes off.

    Then: I slept.

    a) After I took my clothes off, I sleep.

    b) After I took my clothes off, I slept.

   c) After I took my clothes off I slept.

3. First: I came to the USA.

    Then: I arrived in California.

    a)  When I came to the USA, I arrived in California.

    b) After I came to the USA I arrive in California.

    c) I arrived in California when i come to the USA.

4. First: I went to a party.

    Then: I did my homework.

    a) Before I go to a party, I did my homework.

   b) Before I went to a party, I did my homework.

   c) Before I went to to a party I did my homework.