I could have turned to Mr. Smith for help, but he ______ too busy then.
The paper studies some _______ cases in which something somehow wrong leads to the miscommunication, so that English teachers may improve their teaching.
This map is drawn to the _______ of one inch for 1000 miles, so you can find out how far it is from Beijing to Shanghai.
Share prices on the Stock Exchange fell sharply in the morning but _______ slightly in the afternoon.
In many ways China’s rapid growth has been seen as a(n) ______ to improve the cooperation with other countries.
Danny Way’s jumping over the Great Wall and ______ his own dream should be an inspiration to the youth in China.