XII. Use the correct form of the words in brackets.
1. Earthquakes cause the ground to move and shake_________. (violent)
2. Rescue experts can identify_________ victims with modern methods. (bury)
3. Mount Mayon volcano caused a major_________ in the Philippines. (erupt)
4. Volcanic tremor is the rhythmic ground_________. (shake)
5. Despite all the modern technology available to us, we’re still_________ against
earthquakes. (help)
6. The remove of_________ debris can be rapidly finished by machines. (scatter)
7. Indonesia orders immediate_________ as highest alert issued for Bali volcano. (evacuate)
8. We assisted them with the_________ of food and clothing. (provide)
9. Linda was the most_________ typhoon to ever hit Southern Vietnam. (destroy)
10. Medical_________ were sent to the earthquake victims yesterday. (supply)

tớ xin giải thích cho từng câu với ạ!!

X. Underline the correct form.
On 26 December 2004, Tilly Smith, a 10-year-old British schoolgirl (1) walked / was
walking on the beach with her family. Suddenly Tilly (2) felt / had felt that something was
wrong. She could see that the water (3) had risen / was rising and waves (4) had come / were
coming up the beach. The beach (5) got / was getting smaller and smaller. She (6) didn’t
know / hadn’t know that there had been an earthquake in Sumatra that morning, but she
suddenly (7) remembered / had remembered a geography lesson she (8) was having / had
had at school just two weeks before. She (9) told / had told her mother what she (10) was
learning / had learned about earthquake and giant waves. Tilly (11) started / had started
screaming at her parents to get off the beach. They (12) took / had taken Tilly back to their
hotel and (13) raised / had raised the alarm. Thanks to Tilly, everybody from that beach (14)
survived / had survived that terrible day.

IX. Put the verbs in brackets into the past simple or past perfect.
1. By the time the firefighters_________ (arrive), the fire_________ (already destroy)
over 50 hectares of pine forests.
2. Two people_________ (report) that flames_________ (trap) them inside a smoke-filled
apartment.
3. It_________ (rain) all morning before the tornado_________ (touch) down.
4. They_________ (not know) where to shelter from the storm because nobody_________
(tell) them.
5. _________ (you/ already leave) the office when the fire_________ (start)?
6. The post_________ (not arrive) when I_________ (leave) home this morning.
7. It_________ (be) cloudy for days before it_________ (start) to rain heavily
and_________ (flood) the whole City.
8. When I_________ (get) to the check-in desk, I realized I_________ (leave) my ticket at
home.

9. After Tom and his neighbours_________ (put out) the fire, the fire engines_________
(arrive) at the cottage.
10. She_________ (recognize) the warning signs that she_________ (learn) in a school
lesson on tsunami two days before.
11. By the time the rescuers_________ (arrive), they_________ (run) out of food and water.
12. The rescue team_________ (find) the child after they_________ (search) for ten hours.

VIII. Complete the sentences with the past perfect form of the verbs in brackets.
1. Officials said the blaze_________ (damage) five houses in the area.
2. Before Hurricane Sandy struck the US Northeast, it_________ (kill) 72 people in the
Caribbean.
3. US Weather Service_________ (not issue) any warning by the time the tornado moved to
a City nearby.
4. As of Monday night, more 10,149 people_________ (leave) their homes across the
province.
5. We _________ (not experience) any natural disasters before we were trapped in an
avalanche last month.
6. What_________ (the government/ do) by the time the mudslide occurred?
7. El Nino weather_________ (hit) Mekong Delta as the worst drought in 90 years, report said.
8. Many local people said that they_________ (never/ see) such a fierce storm in their life.
9. Those evacuees_________ (not return) home by late December.
10. _________ (people/ evacuate) the area when the hurricane hit?