i hear that your hometown is very famous .that's right .() t

i hear that your hometown is very famous .that's right .() tourists come to visit it every day
A hundreds of B a hundred of
i found () difficult to answer this question.
A that B this C it D/
five years ago,obama () the first black president of the US.for the next two years,he will still () the national president.
A become ;is B became;is C become;be D became;be