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)