More than 68,600 foreigners are working in Shanghai.The number is 13 times ________ of 1996,when Shanghai started issuing expatriate work permits.
_____ basic first-aid techniques will help you respond quickly to emergencies.
Mary worked here as a ____ secretary and ended up getting a full-time job with the company.
As the world’s population continues to grow, the ___of food becomes more and more of a concern.
—Pardon?Who will come? —________.
One way to understand thousands of new words is to gain ________ good knowledge of basic word formation.