Make sure there are no (错误) in your test paper before handing it in.
Our head teacher always (鼓励) us to solve problems by ourselves.
There is a train in now. If you run, you'll just (赶上) it.
The job was so (枯燥) that the young man finally left.
(青少年) are supposed to help with housework to develop their independence.
Prepare yourself for everything (在前面) of time, and you will be successful.
Doing sports can make people happier, (健康), and more confident.
Flying in the sky, we can see the fascinating city (在下面).
In the face of danger, all the firefighters were brave and (没有一个) of them gave up.
(污染) is becoming more and more serious with the rapid development of industry.
I used to (收集) stamps, but now I like drawing.
This APP is quite (有用的) for the students to learn English.
As we all know, everyone is (天生的) with the ability to learn.