把下列句子改为同义句。 1. What will happen if we can't get the work finished? _____  _____ we can't get the work finished? 2. I am too tired to walk any farther. I am _____ tired _____ I _____ walk any farther. 3. You don't need to stay up before a test. You _____ _____ _____ stay up before a test. 4. Kate couldn't decide which song she would sing at the party. Kate couldn't decide _____ _____ _____ _____ at the party. 5. Mom often asks me to drink a glass of water before starting to have breakfast. Mom often asks me to drink a glass of water before _____ _____ to have breakfast.