Part 5: Circle the mistake in each sentence. 1ms 1/ If there were flying saucers, there will be traces of their landing. ………………… 2/ When the phone rang, we had our dinner with The Smiths ………………....

1/ If there were flying saucers, there would be traces of their landing. 2/ When the phone rang, we were having dinner with The Smiths. 3. If I had known he was not at home, I wouldn't have gone all the way to his house. 4. If I had known that the road was flooded, I would never have taken that way. 5. If I were you, I would go to the dentist's and have the tooth checked. 6/ The students learned much about keeping the environmental pollution. 7/ We can't swim in this river because the water is awfully polluted. 8/ She wishes she could speak English fluently. 9/ Nam asked Mai what he could do to help her. 10/ Helen will pass these exams whether she tries to study hard.