49. Choosing the right computer depends on ______ you want to use it for.

A. how B. who C. what D. that

50. It was ______ of Michael to inform us of his delay in case we got worried.

A. careless B. considerate C. patient D. generous

51. Andy is content with the toy. It is ______ he has ever got.

A. a better B. the better C. a best D. the best

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