Many people attend various public lectures, chiefly ______ themselves familiar with the latest development of different fields.
B
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ProfessorWang,_______forhisinformativelectures,waswarmlyreceivedbyhisstudents.
_____theteacher'ssuggestion,Tomfinallyfoundawaytosettletheproblem.
The great use of school education is not so much to teach you things _____ to teach you the art of learning.
Under no circumstance _____ to tell lies to parents.