Put the verbs in brackets into the correct tenses. Don't forget that there exist mixed types of conditional sentences.
1.I had a sandwich for lunch. If I (have) a proper lunch, I (not feel) so hungry now. 2. He told his friend, "I'm not feeling very well. I (not be) here today if I (not promise) to come." 3. I can hardly keep my eyes open. If I (go) to bed earlier last night, I (not be) so tired now. 4. He looked at his watch while he was driving and thought, "If I (not stop) to get petrol, I (be) home now." (use 'might') 5. If Jack (not hurt) his ankle yesterday, he (play) football this afternoon, (use 'could') 6. He wasn't a very happy man, and he often said, "If I (follow) my father's advice, I (be) much happier now." (use 'might