A. to gain specialized knowledge in their desired fields B. gaining specialized knowledge in their desired fields C. they gaining specialized knowledge in their desired fields D. to gaining
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Mark the letter A, B, C, or D on your answer sheet to indicate the correct option that best fits each of the numbered blanks from 18 to 23.
to gain specialized knowledge in their desired fields
gaining specialized knowledge in their desired fields
they gaining specialized knowledge in their desired fields
to gaining specialized knowledge in their desired fields