Typhoons   in the northern part of the world have girls' names.Sometimes they have very beautiful names.Rose is a pretty name but there was nothing pretty about Typhoon Rose.It was the worst typhoon to hit Hong Kong in ten years. It began to rain in the morning of Monday, August 16th, 1971.At ten o'clock in the morning, Typhoon Rose was still 130 miles away but already the wind was blowing people's umbrella away.The wind became stronger and stronger.The typhoon shelters   were soon full of boats.Ships that were too big to go inside the shelters put down more anchors  .Some very big ships went out to sea.It is safer for a big ship to be at sea in a typhoon because it cannot be blown onto rocks.Kai Tak Airport closed.No planes were able to take off or land.At 9:00 in the evening, all the lights went out. No one slept well that night.It is difficult to sleep in such bad weather. In Typhoon Rose, more than one hundred people died.229 people were hurt and 66 of these had to go to hospital.1500 lost their homes.The people of Hong Kong will not quickly forget Typhoon Rose! Some big ships didn't go inside the shelters because   _  .
they had more anchors it is safer outside they were out at sea and they weren't fast enough to reach the shelters when Typhoon Rose came it was too expensive for big ships to go inside the shelters
Question: Typhoons   in the northern part of the world have girls' names.Sometimes they have very beautiful names.Rose is a pretty name but there was nothing pretty about Typhoon Rose.It was the worst typhoon to hit Hong Kong in ten years. It began to rain in the morning of Monday, August 16th, 1971.At ten o'clock in the morning, Typhoon Rose was still 130 miles away but already the wind was blowing people's umbrella away.The wind became stronger and stronger.The typhoon shelters   were soon full of boats.Ships that were too big to go inside the shelters put down more anchors  .Some very big ships went out to sea.It is safer for a big ship to be at sea in a typhoon because it cannot be blown onto rocks.Kai Tak Airport closed.No planes were able to take off or land.At 9:00 in the evening, all the lights went out. No one slept well that night.It is difficult to sleep in such bad weather. In Typhoon Rose, more than one hundred people died.229 people were hurt and 66 of these had to go to hospital.1500 lost their homes.The people of Hong Kong will not quickly forget Typhoon Rose! Some big ships didn't go inside the shelters because   _  .
A. they had more anchors
B. it is safer outside
C. they were out at sea and they weren't fast enough to reach the shelters when Typhoon Rose came
D. it was too expensive for big ships to go inside the shelters
Answer: