pronounce test

Today I took test about pronounce. The test is education's class. There are eleven sentences. The sentences are
When a student from another country to study in the United States, he has to find the answers to many questions, and he has many problems to think about. Where should he live? Would it be better if he looked for a private room off campus or if he stayed in a dormitory? Should he spend all of his time just studying? Shouldn't he try to take advantage of the many social and cultural activities which are offered? At first it is not easy for him to be casual in dress, informal in manner, and confident in speech. Little by little he learns to what kind of clothing is usually worn to be casually dressed for classes. He also learns to choose the language and customs which are appropriate for informal situations. Finally he begins to feel sure of himself. But let me tell you, my friend, this long-awaited feeling doesn't develop suddenly - does it?
The teacher told me about "take advantage of the many social" and "sure of". He said, these words are connected. It's hard for me to chadnge my pronounce!
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