汉译英:如果天气好的话,我们就去徒步旅行等`````

问题描述：

1.如果天气好的话,我们就去徒步旅行.
If the weather ( ) fine,we'll ( ) ( ).
2.跑了500米之后,我开始感到累了.
AFTER ( )500 meters,I began to ( ) ( ).
3.每周四我们都要进行学校大扫除.
We have a school ( ) every Thursday.

问题解答：

1,is......go walking
2,finishing.... feel tired
3,cleaning

is go outing
finishing get tired
cleaning