【简答题】Task1 Identify the topic sentence in each of the following paragraphs. 1. The forestis a sanitary agent. It is constantly eliminating impurities from the earth andthe air. Trees check, sweep, and filt...
【简答题】Directions: Identify the topic sentence in the following paragraph. The forest is a sanitary agent. It is constantly eliminating impurities from the earth and the air. Trees check, sweep, and filter ...