请根据括号中的中文提示、英文释义或句意，写出句中所缺单词，使句子通顺。
（1）We students should do many after-school____ (活动).
（2）People in different countries speak different l____ .
（3）It's ____ (hard or not easy) for me to play basketball well because I can't run fast.
（4）This boy doesn't know the____ (重要性) of study.
（5）L____ , he wasn't badly hurt yesterday.

两个角的和为67°56′，差是12°40′，求这两个角．

据观测，火星上常发生火山喷发，喷发的规模远大于地球。火星上的火山喷发是（ ）

完形填空

通读下面的短文，从A、B、C三个选项中，选出一个最佳选项填空,使短文意思通顺、结构完整。

      Are there aliens? In the movie Home there1. The Boov are aliens. But their enemies ruined their planet. 2the Boov have to find a new planet. They choose to go to 3and drive people away.

      Earth is a good place. The Boov are4there. They have a party to celebrate. But a Boov named Oh makes a big 5. He asks everyone to come to their party, including their enemies. Other Boov think Oh is 6 spy(间谍). Oh 7run away. He meets Tip, the last8on Earth. Tip is smart. The Boov can't catch her.

      Both Oh and Tip are on the run. They become friends and go on adventures. On the way, the9 change each other's world. And they get to understand the true meaning of “10”.