Question

___happy l am to meet you here ，MARY。we haven't seen each other for a long time

Answer 1

__D_happy
l
am
to
meet
you
here
，MARY。we
haven't
seen
each
other
for
a
long
time
答案A：what
a
B:what
C：how
a
D：how
在这见到你，我太高兴。
我们好久都没见面了。
这里的感叹句修饰的是happy，所以用how。