填空题 Answer the questions below.
Write NO MORE THAN THREE WORDS AND/OR A NUMBER for each answer.

填空题 When did Mt. Pinatubo erupt for the first time?

填空题 When was the earthquake measuring 7.8 recorded?

填空题 When did the experts begin to study Mt. Pinatubo?

填空题 What fell on the local villages on 2nd April?

填空题 What does a "Level 5" alert mean?