In the interview, he had finally ______ several customers of the advantages of his product
| A．convinced | B．reminded | C．accused | D．informed |
20. The rest of his life was devoted ___ pollution ___more happily .
| A．to prevent , to live | B．to protecting , from living |
| C．to protect , from living | D．to preventing , to live |
19. --- Could you tell me how the sea sand comes about ?
--- Sea waves dash against the rock. In this way , the sea sand ___ .
| A．comes into use | B．comes into office | C．comes into effect | D．comes into being |
18. A new ___ bus service to Tianjin Airport started to operate two months ago .
| A．normal | B．usual | C．regular | D．common |
17. Greatly moved by what he did , ____ .
| A．tears came to my eyes | B．my heart was full of gratefulness |
| C．my eyes were filled with tears | D．I could hardly hold back my tears |
16. My dear , where have you ___? I___ you everywhere .
| A．gone , have been hunting for | B．been , have been hunted for |
| C．been , have been hunting for | D．gone , have been looking for |