用“ if ” 把下列句子連接起來。
1. I will go the park tomorrow.  I have time. 
                                                                          
2. They stay in the desert.  They will see the camels.
                                                                          
3. Tigers are in danger.  They attack people.
                                                                          
4. Elephants are thirsty.  They go to the river.
                                                                          
5. Giant pandas have no food.  They die.
                                                                          
1. If I have time, I will go the park tomorrow.
2. They will see the camels if they stay in the desert.
3. If tigers are in danger, they attack people.
4. If elephants are thirsty, they go to the river.
5. If giant pandas have no food, they die.
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