_________(54)
A.learnt
B.gathered
C.understood
D.gained
54._________A. accurateB. modelC. preciseD. ideal
54._________A. stylesB. patternsC. labelsD. models
54._________A. feelB. lookC. soundD. work
54._________A. ofB. atC. forD. to
54._________A. discoveredB. concludedC. foundD. t
54._________A. afterB. forC. inD. at