请选择DCBA*a7o-I6^;H His mother _________ her child how _________ cook last night .:R6{-q'K4b't'i/@
A. teaches , do:R6{-q'K4b't'i/@
B. taught , to:R6{-q'K4b't'i/@
C. taught , in:R6{-q'K4b't'i/@
D. teach , on:R6{-q'K4b't'i/@