用所给动词的适当形式填空：
1. Everyone knows that the earth ________ ( go ) around the sun.
2. ----Where’s Sam? -----He _________ ( plan ) a day out tomorrow in the library.
3. ----- Who _________ (speak) at tomorrow’s meeting? ----- Kitty is, I think.
4. Please be quiet while the two children ___________ ( sleep )there.
5. Your house will catch fire if you ________ ( not, be ) careful enough.
6. Don’t worry! They ___________ ( arrive) here soon.
7. She would like each of us _______ (join) in the fashion show.
8. The first step towards _______ (know) the directions (方向) is to be able to read maps.
9. Mr. Wu says to the boy, “ __________ (not, be ) late next time, my boy!”
10.I think the colour white makes the T-shirt ________ ( look ) clean.
1.goes 2. is planning 3. is going to speak 4. are sleeping 5. aren’t
6. will arrive 7.to join 8. knowing 9. Don’t be 10. look