按要求写出单词或短语的正确形式。1. backwards (反义词) ________________
2. fast (反义词) ________________
3. leaf (复数形式) ________________
4. ski (现在分词) ________________
5. stand up (反义词组) ________________
6. teach (反义词) ________________
7. slowly (形容词) ________________
试题答案
1. forwards 2. slow / slowly 3. leaves 4. skiing 5. sit down 6. learn 7. slow