— May I ask you a favor?
— ___________
A It’s my pleasure. B I have no time C With pleasure D Sure, go ahead.
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 |
15. We all greatly ___ your cooperation in the building of the power station .
| A．thank | B．appreciate | C．attend | D．join |