II. Give the correct forms of the words in parentheses.
1. The form must have the _________________________ of the owner. (sign)
2. You don’t have to ______________ all these grammar points (memory)
3. The ________________________ of African is increasing day by day. (emigrate)
4. He felt upset because of his _______________________ job (succeed)
5. Don’t leave the light on. It wastes _______________. (electric)
6. Ho Chi Minh City is an important ____________ center. (commerce)
7. She ___________ displayed her prize. (proud)
8. They are slow ___________________. (learn)
9. The farmer and his wife looked at the gold egg in _________________ . (amaze)
10. ________________________ , he can’t find the job. (fortunate)
11. Miss Kale likes this chair because it is _________________________ . (comfort)
12. You should follow the __________________precautions . ( safe)
13. Could you show me the way to the local ___________________? (orphan)
14. My new friend is quite ___________________. He often makes us laugh. (humor)
15. He tries to memorize the new words by saying them ____________________ times. (count)
16. They first ______________________ the device in 1867. (introduction)
signature
memorize
emigration
unsuccessful
electricity
commercial
proudly
learners
amazement
unfortunately
comfortable
safety
orphanage
humorous
uncountable
introduced