I.Fill in the blank with although, and, because, but, or, since, so, unless, until, when. 1.Things were different ........................ I was young. 2. I do it ......................... I like it. 3. Let us wait here ......................... the rain stops. 4.You cannot be a lawyer ......................... you have a law degree. 5.She has not called ......................... she left last week. 6.I saw him leaving one ......................... two hours ago. .7.This is an expensive ......................... very useful book. 8.We were getting tired ......................... we stopped for a rest. 9.He was angry ......................... he heard when happened. 10. Walk quickly ........................ you will be late. 11. He had to retire ......................... of illness. 12. We will go swimming next Sunday ......................... it doesn‟t rain. 13. I heard a noise ......................... I turned the light on. 14. Would you like a coffee ......................... tea? II. Find and correct the mistakes 1. The flight to Vientiane have departed. 2. She hasn‟t finish the letter. 3. I forget that girl‟s name already. 4. Fred‟s brother just graduates from university. 5. I am trying to learn English for years. 6. I have been waiting for two hours, but she not come yet. 7. She reads all the works of Dickens. How many have you read? 8. I wait hare nearly half an hour for my gir-friend Joana; do you think she forgets to come? 9. Mary rests in the garden all day because she is ill. 10. Although John has been studying at the university for five years he have not got his degree yet III. Rewrite the sentences. Ex: They were married five years ago. −> They have been married for five years. 1. The last time we saw her was on Christmas day. We haven‟t ............................................................................................................................. 2. I haven‟t eaten this kind of food before. This is .................................................................................................................................... 3. It started raining an hour ago. It has ...................................................................................................................................... 4. We haven‟t visited my grandfather for two months. The last time ........................................................................................................................... 5. I have studied English for three years. I began ................................................................................................................................... 6. My brother hasn‟t seen his best friend for nearly five years. It‟s .......................................................................................................................................... 7. When did you start learning English? How long ...............................................................................................................................