Read the text and mark only TRUE sentences. During heavy rainfalls these amazing monkeys keep dry by covering themselves with enormous umbrellas made of big rainforest leaves. But they use these leaves in a different "musical" way. When orangutans need to protect themselves from other wild animals, they start making noise and press leaves against their lips. It makes sound more agressive

• These monkeys know how to cover themselves while raining.
• They have enormous umbrellas.
• Orangutans are so big that they don't have to protect themselves.
• Orangutans start making noise when it's dangerous.