根据句意及汉语提示完成句子。 1. Reading Harry Potter has become very popular _____ (在……之中) many students. 2. —How long may I _____ (借) the book? —For a week. 3. Which is _____  (安全), traveling by train or by plane? 4. On my _____  (二十) birthday,I received lots of presents from my friends. 5. Computer is one of the greatest _____ (发明). I can't imagine life without it. 6. Can you_____  (买得起) to buy the house? It's quite expensive. 7. I was too busy and _____  (错过) the film“Transormers 2'. 8. They are different. They do things _____  (不同),  too. 9. Parents should not be too _____ (严厉的) with their children. 10. She wants to _____ (成为)  a singer when she grows up.