CONDITIONAL SENTENCES (Câu điều kiện): 1. Girls don’t talk to you because you never smile. If . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2. We got lost last night because we forgot the GPS. We . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3. I didn’t go to see Helen because I didn’t know she was in hospital. If . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4. There are too many cars. As a result, our city is polluted. Our city . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5. Peter lives with his parents because he can’t buy a flat. Peter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6. It rained so we couldn’t go for a walk. If . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7. The reason I was late was that my alarm clock didn’t work. If....................................... PASSIVE VOICE (câu bị động): 1. People are using too much freshwater nowadays. 2. Some farmers are overusing chemicals in their crops. 3. Europe was consuming too much oil when the economic crisis broke out.