3.the mother is very glad;her baby is begining__________.a.understanding what she meansb.tounderstanding that she meantc.to understanding what she meansd.noticing what she means
问题描述：
3.the mother is very glad;her baby is begining__________.
a.understanding what she means
b.tounderstanding that she meant
c.to understanding what she means
d.noticing what she means
答