Glass milk bottles can be used again and again, but they need __________ thoroughly, ____they?
24. --- What are the greatest ____ ? --- A giant panda. attraction B. attractions C. attractive D. Attract
25. Australia is an island continent lying between ____ .
26. The leaves of this tree turn red ____ , so we visit it at the end of every October.
27. He is above ______ in his lessons. That's the results of his hard work.
28. Do you happen to know the proverb, “Shoot two ____ with one arrow”?