I. Complete each of the sentences with the correct form of the verb in the box. (Hoàn thành câu với dạng đúng của động từ) increase expect decrease reach limit raise control populate support freeze 1. North America was once widely ______ by Native American tribes. 2. The world's population is ______ to be over 7 billion by 2010. 3. The population has ______ from 1. 2 million to 1. 8 million. 4. Water ______ at OoC. 5. Parents should ______ what their kids watch on television. 6. The number of new students ______ from 210 to 160 this year. 7. My family have been ______ sheep for over 60 years. 8. How can we ______ our families on such low wages? 9. Profits are expected ______ £2 billion this year. 10. The role that women could play was socially ______.