一、用括号内所给词的正确形式填空。
1. There is nothing (bad) than going out in the cold wind with wet hair.
2. We bought three (ticket) online for the sci - fi movie.
3. Scientists are creating new (robot) that can explore deep oceans.
4. Many people make (prediction) about what life will be like in 50 years.
5. This cup of coffee has (little) sugar than the one I drank yesterday.

1. worse 2. tickets 3. robots 4. predictions 5. less

1. 由"than"可知用比较级，bad的比较级为worse。2. "three"后接可数名词复数，ticket的复数为tickets。3. "new"后接名词，robot为可数名词，此处表泛指用复数robots。4. "make predictions"为固定搭配，prediction用复数predictions。5. 由"than"可知用比较级，little的比较级为less。

二、从方框中选择适当的短语并用其正确形式填空。
outer space take over be positive about climate change be able to
1. When she was eight years old, she play the piano well.
2. Many kids dream of travelling to one day.
3. Our teacher told us how affects animals.
4. Some robots dangerous work in my uncle's factory last month.
5. Jack is an outgoing boy, and he solving difficult problems.

1. was able to 2. outer space 3. climate change 4. took over 5. is positive about

1. 句意为“她八岁时钢琴弹得很好”，“be able to”表示“能够”，根据“was”可知用一般过去时，主语是she，所以填“was able to”。
2. 句意为“许多孩子梦想有一天去外太空旅行”，“outer space”表示“外太空”，符合语境，填“outer space”。
3. 句意为“我们老师告诉我们气候变化如何影响动物”，“climate change”表示“气候变化”，填“climate change”。
4. 句意为“上个月我叔叔的工厂里一些机器人接管了危险的工作”，“take over”表示“接管”，根据“last month”用一般过去时，填“took over”。
5. 句意为“杰克是个外向的男孩，他对解决难题持积极态度”，“be positive about”表示“对……持积极态度”，主语是he，一般现在时，填“is positive about”。