_help me,i had to do it all alone. a.there is no one to b.th
_help me,i had to do it all alone. a.there is no one to b.there being no one to c.being no o
_help me,i had to do it all alone.
a.there is no one to
b.there being no one to
c.being no one
d.with no one
为什么选b而不选d呢?求解.