根据对话情景，填写单词，每空一词.

Jim: Hey, Sally! I didn't see you____ the weekend.

Sally: No, I ____  at home.

Jim: Why?

Sally: Well, I ____  lots of things to do.

Jim: Like what?

Sally: Well, I cleaned my room. And I did my homework.

Jim: You did? Not much fun, huh?

Sally: Well, it____ too bad. On Sunday I ____  to the library.____  about you? What did you do?

Jim: Well, I ____  soccer on Saturday morning. On Sunday afternoon, I ____ to a movie. And on Sunday night. I____ my friend’s house.

Sally: Wow! You had fun.

Jim: Yeah, I____  fun. But I must do my homework, so school this morning wasn't fun.

①高温下用碳还原二氧化硅制得粗硅；

②粗硅与干燥HCl气体反应制得SiHCl₃：Si+3HCl SiHCl₃+H₂；

③SiHCl₃与过量H₂在1 000～1 100℃反应制得纯硅已知SiHCl₃能与H₂O强烈反应，在空气中易自燃．

请回答下列问题：

作文：

       生活中，因为有他（她、它）的一路陪伴，我们迎着风雨，步入阳光，走向成功。其间的苦与乐、泪与笑、委屈与鼓励、叛逆与警醒……这都将成为我们美好的记忆，永远铭刻在心。请以“感谢一路有你”为题写一篇文章。

       要求：①除诗歌外，文体自选；②内容具体，有真情实感；③字数不少于500字；④文中不得出现真实的地名、校名、人名等。

简$\overrightarrow{AB}$+$\overrightarrow{BC}$-$\overrightarrow{AC}$-$\overrightarrow{DC}$（　　）