请选择BA3f3g8U/w,|.H4[*x9R5q-U2@)} 你想介绍John给妈妈认识,你会说:4j/F:L-r;Z:B-b;l+i/D9n:i5Y,w,^:r
A. Mum, this is John4j/F:L-r;Z:B-b;l+i/D9n:i5Y,w,^:r
B. Goodbye, John4j/F:L-r;Z:B-b;l+i/D9n:i5Y,w,^:r