-- _____is that used for?---_____ the floor.
27.The boy _______ in the bed ______to his friend that a cock laid an egg yesterday.
26.— Andy promised to attend your wedding today last night. — Yes, I believe he will ________.
25.________ of such a long movie, the little boy turned to his favourite music.
24.The Dragon Boat Festival had its____as an event in memory of Qu Yuan, a great poet in China.
23.The young engineer was_____a gold cup because of his creative achievements for the development of the company.