1 . Some people volunteer to help people __________ (在困难中). (根据汉语提示完成句子)

2 . The mayor has ________ (安排) for a car to pick you up at the airport.

3 . The whistle blew and the train________(移动；溜进)forward and at last disappeared in the heavy fog. (根据汉语提示单词拼写)

4 . The sport has a _______________(严格的) code of conduct. (根据汉语提示单词拼写)

5 . Scientists still cannot ________ (预测) when earthquakes will happen. (根据汉语提示单词拼写）

6 . You should c_____________ on your work when you study. （根据首字母填空）