Exercise Twenty-Four
1. It was essential that _______________（我们在月底前签订合同）.
2. _______________（家庭人口多好还是人口少好）is a very popular topic，which is often talked about not only by city residents but by farmers as well.
3. We must _____________（用一切可能的办法来帮助他们）.
4. We ________________（尽情地吃了一顿）at the new restaurant last Friday.
5. To most of the travelers，________________（衣、食、住、行）are all important elements.