1. l\'m very worried about my best friend. You shouldn\'t worry so much. 2. l\'ve got a bad headache. You should take painkillers. 3. l\'ve broken my sister\'s new mobile phone. You should tell her tonight. 4. Look! lt\'s raining and I forgot my umbrella. You should wait until the rain stops. 5. I feel very tired. You shouldn\'t stay up late into the night.