问题
填空题
根据句意，用所给单词的适当形式填空。
1. In one place I saw children ________ (work) for a cruel boss.
2. I have been to Hong Kong ________ (one).
3. There are some less ________ (develop) countries in Africa.
4. China's economy is ________ (increase) rapidly.
5. Have you spent the whole day ________ (consider) it?
答案
1. working 2. once 3. developed 4. increasing 5. considering