根据句意，用所给动词的适当形式填空。
1. It is a fine day. The sun _________ (shine) brightly.
2. They _________ (visit) the Science Museum next Sunday.
3. Mr Brown _________ (live) in Beijing since he came to China.
4. Mr Wang _________ (teach) us English two years ago.
5. The Smiths __________ ( watch) TV at this time last night.
6. We _________ (learn) about ten English songs by the end of last term.
7. Father said that he _________ (buy) a new bike for me the next Friday.
8. Bill isn't here. He _________ (chat) with his friends in the classroom.
9. The teacher said that the moon _________ (go) round the earth.
10. The Young Pioneers will go to the zoo if it _________ (not rain) this Sunday.
2NH3(g)＋CO2(g)。可以判断该分解反应已经达到化学平衡的是 [ ]