There is no doubt _______ nearsightedness is a serious problem among the youth of our country.
Our bodies are ________ by working out. Similarly, our minds are developed by learning.
________ his spare time that his English has improved a lot.
The Chinese government holds that peace and development ________ the Taiwain Straits is the correct path.
In the early morning, all of us stood at the top of the mountain to ________ east of the city, watching ________ burning sun rising.
Have you bought the same book ________ I referred to yesterday?