你应该学会礼貌地拒绝别人的邀请.(turn)
You are supposed to learn others' invitation politely.
There are some boys (swim) in the river now. It's very dangerous.
The (careful) you work, the fewer mistakes you'll make.
Chinese parents try their best (提供)a good environment for their children.
A Chinese father made some nice dresses for his daughter with his (wife) old shirts.
No matter what happens, believe in (you), boys and girls.