用所给单词的适当形式填空。 |
1. At last, he and his friends finished the work _____ (success). 2. That is a _____ (use) book. 3. I saw Dick _____ (do) his homework just now. 4. It is dark now. We have to _____ (stop) the work. 5. Mr. Brown is learning English for _____ (busy). 6. It is important _____ (plant) more trees. 7. Please teach us how _____ (bake) cookies. |