用括号中所给词的适当形式填空。 1. She has two hands and two ________ (foot). 2. She has got a ________ (print). 3. He checks the train timetable, but he doesn't buy any ________ (ticket). 4. This is the ________ (one) lesson of the book. 5. Are there any ________ (mouse) in your house? 6. Many ________ (visit) come to Beijing every year. 7. Tony ________ (not visit) his grandparents, but he often sends emails. 8. I don't know how ________ (download) music from the Internet. 9. September is the ________ (nine) month of the year. 10. Do they often use the Internet to send emails and ________ (photo)?