The headmaster didn’t make clear when and where the sports meeting would be held.
35. — Have you finished your essay? — Half when you come back.
34. The visitor asked to have his picture taken _________ stood the famous tower.
33. Mr. Wang made up his mind to devote all he could ____ his oral English before going abroad.
32. Staying in a different country, just watch others to see _____ they act to decide what the best to say is.
31. The cheering went on for quite some time _____ it died down and people took their seats again.