2) The old man has two sons. One is a soldier, is an engineer. 3) Many people are in the park. Some are taking a walk, are flyin g kites. 4)Would you like cup of coffee? 4. a number of /the number of a number of 是指“大量的”,后面的动词是复数形式???e.g. A number ...
Relying on mobile social networking such as WeChat and Microblog, social commerce platforms acquire new users through the sharing and communication between old users. Consumers' purchasing demands will be stimulated at any time in scattered social scenes. Under the mode of social commerce, firms can...