I. Use the correct form of the word in parentheses :
1. There has been a rise number of ________________ coming from Eastern Europe. (immigrate)
2. My sister has a _________________ for fried food. (perfect)
3. My mother is very good at keeping the _________________ within our family. (peaceful)
4. People were deeply shocked by the ________________ news of his death. (tragedy)
5. They have settled __________________ in New Zealand. (permanence)
6. These actors gave good _________________ last night. (perform)
7. He gave the teacher a _______________ of reasons for his absence yesterday. (vary)
8. She prefers this black chair to that brown chair because the brown chair is ________. (comfort)
9. We like attending English __________________ contests at school. (speak)
10. Alexander Graham Bell _________________ to Canada in 1870. (migrant)
11. It was very difficult for the boss to ________________ the workers. (peaceful)