Uncle George didn’t ______ until he was nearly fifty.
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.
30. —I _________ his telephone number. —I have his number, but I _________ to bring my phone book.”