Here are the underlined parts that need correction in each of the questions:

1. **C. fire extinguish** - Correct form is "fire extinguisher".

2. **D. on** - Should be "in" (stay inside a building when it is "in" fire).

3. **C. up** - Should be "to" (You should move to a safe place during a heavy flood).

4. **C. calling** - Should be "call" (If you are in danger, call the emergency service, they can help you).

5. **B. project** - Should be "protect" (Stay on a table to protect yourself when an earthquake happens).

6. **D. caused** - Should be "cause" (How much damage did the avalanche cause?).

7. **B. much** - Should be "many" (How many people got hurt in the tsunami?).

8. **B. have** - Should be "had" (How many people had to leave their houses because of the earthquake last week?).