1£®One of the volunteers(volunteer) for the rescue work injured himself when helping others.

2£®It was when I arrived home that I realized I had left my key in the office.

3£®After many days' voyage, they arrived in what is called Africa now.

4£®As children, Lucy and her sister always used to compete with each other for favourite toys.

5£®I can't stand going (go) out in rush hours.

6£®The local government should not ignore its responsibility (responsible) or turn a blind eye to the problem.

7£®All the old computers in village schools will be replaced (replace) with new ones.

8£®News came from the school office that Wang Lin had been admitted (admit) to Beijing University.

9£®Don't just stand by. Can't you lend a hand?

10£®Tom, as well as his friends£¬is (be) going to visit the exhibition next week.