Social networking is an important factor _______ business success.
| A．devoting to | B．appealing to |
| C．attaching to | D．leading to |
31．With the cell phone available, I can do whatever I want to do and still______in touch with my parents and friends．
| A．stay | B．to stay | C．staying | D．Stayed |
30．It was the training that he had as a child________made him such a good pianist, received by teenagers as well as adults．
| A．that | B．which | C．who | D．What |
29．The patient who had suffered from H1N1 insisted on_____________from others immediately, holding the belief that the disease would infect others．
| A．being isolated | B．having isolated | C．to be isolated | D．Isolating |
28．You___________use your cell phone here in our hospital because of the disturbance to the electronic equipments! It’s forbidden．
| A．shouldn’t | B．may not | C．needn’t | D．mustn’t |
27．The worker coming from the rural area spent twenty minutes painting on end of the stick red and_________white．
| A．another | B．others | C．the other | D．Other |