根据汉语提示及句子意思，在句中横线上填入适当的单词或词组（每空限填一词）。 1. We have a history lesson on ________ (星期五). 2. Mr. Chen told us a ________ (滑稽可笑的) story yesterday. 3. —I think quiz shows are wonderful. I can learn a lot from them. —I ________ (同意) with you. 4. —What about the piece of music? ——It ________ (听起来) sweet. 5.I haven't finished my homework ________ (仍然). 6. The students talked about a moving movie ________ ________ (刚才). 7. Everyone knows the Olympic rings ________ ________ (代表) the five parts of the world. 8. Sometimes the police wear plain clothes to ________ (执行) special tasks. 9. There is ________ ________ (无疑地) that the Great Wall is one of the greatest wonders in the world. 10. It's such a big table that it  ________ ________ (占据) half of the room.