{{B}}quEstions 27-30{{/B}}

A、thE unAnswErED quEstions During thE lECturEs.
B、thE DisCussion with thE sErious proFEssors.
C、thE rEsults oF his FinAl ExAminAtions.
D、thE low mArks hE hAD sCorED During thE tErm.