it&#//www.souquanme.com39;s polite for sb to do s//www.souquanme.comth造句
It
is
polite
for
the
students
to
greet
their
teachers
first
when
they
meet
each
other.
对学生来说,，碰到老师时，先跟老师打招呼是礼貌的（行为）。
is
polite
for
the
students
to
greet
their
teachers
first
when
they
meet
each
other.
对学生来说,，碰到老师时，先跟老师打招呼是礼貌的（行为）。
it's polite
Itx27s polite______"搜趣网Thank you".A.say B.to say C.saying D.s//www.souquanme.comaid 选什么,为什么、?B
是it's + 形容词 + to do 的结构,再如：
It's important to le搜趣网arn English well.
是it's + 形容词 + to do 的结构,再如：
It's important to le搜趣网arn English well.
