与80.080相等的数是（　　）

下列过程中，有一个力的作用效果与其他三个不同类，它是（   ）

如果点M在第二象限，且点M到y轴的距离是4，到x轴的距离是3，则点M的坐标为（ ）

下列说法正确的是（      ）

用动词的适当形式填空。
⑴In class, every student in our class ____  (take) notes carefully
⑵–Do you think whether the book called Harry Porter is worth ____  (read)?  - Yes, of course.
⑶ I called you yesterday afternoon, but you were out. - Oh, I ____ (watch) a football match on the playground.
⑷ Can you hear the two boys ____  (argue) with each other right now?
⑸The person we talked about ____  (visit) our school next week..