4. Circle the correct answer. 1. They have worked at this company (when/ since) they graduated. 2. At 8 p.m. last night, I was doing my homework (when/ while) my sister was playing with her toys.) 4. (Although/ Despite)Mary looks thinner than me, she is much stronger than me. 5. They didn't come to the party (since/ as soon as) they were too busy. 6. You should bring your raincoat (unless/ in case) it rains. 7. I didn't realize her new hair (when/ until) she told me. 8. I won't accept this job (even if/ if) they offer me a high salary. 9. My father will buy me a book (even though/ as long as) I pass the exam. 10. I like her (when/ even though) she's annoying sometimes 3. (Before/ After) I had eaten my breakfast; I went to school by bus.