This project requires close teamwork. Willbe achieved unless we work well together.

There is still something we can try _____ those dyinganimals.

Fuzhou-Quanzhou-Xiamen high-speed railway has been running for more than a year______, fewer people take the trip by bus

It took him a long time to ______the skills he neededto become a professional artist.

Our government is doing _______ to protect the environment. -That’s great.