1.We should learn all the new words by heart in order to __enrich___ our vocabulary. (rich)
2. He didn’t take my remarks ____seriously__. In fact, he thought I joked. (serious)
3. Mr. John caused an accident yesterday. He drove very __carelessly____. (care)
4. After the earthquake, a lot of people suffered from __homelessness____. (home)
5. We must keep the environment ___unpolluted___. (pollute)
6. This knife is very __useless____. I can’t cut anything. (use)
7. We are really impressed by the __friendness____ of these villagers. (friend)
8. There used to be a big tree at the ___entering___ to this village. (enter)
9. We prefer to wear modern clothing at work because it is more ___convenient___. (convenience)
10. Students feel ___uncomfortable___ when they are not in their favorite clothes. (comfort)