Question

4. build (v.) — (n.) 建筑物；房子

— (n.) 建造者

— (过去式/过去分词)

5. different (adj) — (n.) 差别;差异

6. twoinum. (num.) — (adv.) 两次;两倍

7. write (v. ) — (n.) 作者;作家

Answer 1

4. building;builder;built   5. difference   6. twice   7. writer