Question

I t is___to say "Thank you. " when you get something from others.

A a bad manner B bad maners C a good matter D good matters 选什么呢？ 请解释下为什么谢谢各位高手！！ 答案是D，，，。。我也选c，不对啊

Answer 1

It
is
a
good
manner
to
say
"Thank
you."
when
you
get
something
from
others.
'It'
形式主语
，真正的主语是
to
say
"
Thank
you."
系动词
是
is,
单数形式，所以用
a
good
manner.
还原：To
say
"
Thank
you."
is
a
good
manner
when
you
get
something
from
others.