1. bring(过去式)________ 2. put(现在分词)______

3. understand(过去式)_______ 4. happy（比较级）_______

5. smile(现在分词)_____ 6. friend(形容词)_______

7. dictionary(复数)_____ 8. many(同义词)______

【答案】1. brought 2.putting

3. understood 4.happier

5. smiling 6.friendly

7. dictionaries 8.much

【解析】

略