根据句意, 用括号内所给动词的适当形式填空. (必要时加助动词或情态动词) 1. Mr Zhang ______ (teach) us English three years ago. 2. Peter turned off the computer after he finished ______ (write) an e-mail. 3. —Where's Miss Wang? —Look, she ______ (talk) with the students. 4. Mr Liu isn't here now．He ______ (go) to Beijing. 5. The children will go to the zoo if it ______ (not rain) this Saturday. 6. There ______ (be) a meeting in our school tomorrow afternoon. 7. Mr Green ______(watch) TV at this time last night. 8. You'd better ______ (eat) less food before you go to bed. 9. My teacher told me that light ______ (travel) much faster than sound. 10. English ______ (speak) by many people in the world.