动词填空 用括号内所给动词的适当形式填空，并将答案写在答题卷标有题号的横线上。（本大题共8分，每小题1分）

小题1:The musical video you look forward to _________________(sell) out yesterday.

小题2:At this time yesterday, that woman together with her sons _______________(wait) for his    husband at the station.

小题3:Look! The snow ______________(stop).Let’s go outside to make a snowman.

小题4:Last week they replied to my letter. They said they __________(fly) to see me the next month.

小题5:I don’t know what I should pay attention  ________________(reduce) the pollution.

小题6:When I got to the factory, my workmates ________________(finish) their work.

小题7:Our school _________________(organize) a visit to the park unless it rains tomorrow. 

小题8:When we were young, our teacher told us the earth _____________(travel) around the sun.

(7分)凉山某些地区的少数农民有焚烧秸秆和铲烧草皮的习惯，这种做法既浪费资源，又污染环境。现有生石灰、草木灰、水、无色酚酞和一些化学仪器的替代品：塑料瓶、土陶碗、木筷、纱布等。请你根据所学知识在家里完成制取氢氧化钾的实验与探究。

①将草木灰溶于水，搅拌，静置。经处理后得到草木灰的浸取液，．取浸取液少许，滴入几滴无色酚酞试液，溶液呈现      色，从而知道草木灰浸取液显        (填“酸性、碱性、中性”)；

②写出生石灰与水反应的化学方程式为                                      ；

③将②得到的产物与草木灰的浸取液混合，发生的化学反应方程式为                       

④将③反应后的混合物进行分离，此分离的方法叫           ，再将所得液体进行加热蒸发，就可制得氢氧化钾。能使