Exercise Twenty-Six
1. Man，no less than the lower forms of life，_______________（是演化过程的产物）.
2. _______________（不止一个人觉察到）her agitation.
3. ________________（液体密度越大），the easier it is to float on it.
4. _______________（只有工人的要求得到满足）will they return to work.
5. Had ________________（要不是有水库）we'd never have been able to beat the drought.