19. — Could you tell me how the sea sand comes about ? — Sea waves dash against the rock. In this way , the sea sand ___ .

Neither Li Hua nor I am good at ________.

orth downloading, because it’s freeand doesn’t__________ a lot of disk space

How are the things in your village?— Modern farming methods have been brought in and the villagers are ________ now than before.[ ]

Have you ________ some new ideas —Yeah I’ll tell you later