II.Complete the sentences. Use the correct word in parentheses. 1.He felt sick……………he had eaten too much. ( because / so) 2.He didn’t study ………….he failed the test. ( because / so) 3.His car didn’t start ………….the battery was dead. ( because / therefore) 4.Solar energy is clean ………….almost endless.( and / but) 5.I sent her three letters,………………she didn’t reply. ( or / but) 6. I will tell you my plans…………….we are having dinner. ( while / or / because) 7.I enjoy learning English ………………I find it very difficult. ( but / so / or) 8.Her hobbies are watching TV……………….playing games. ( and / although / or) 9.The course was cancelled ……..There were very few students registering for it. ( so / because / but) 10. The weather was cold ; ……….. ,she wore a sweater.( so / therefore / because)