来自贾冬艳的问题
It'simpossibleforustoheareverything________isgoingonintheworldIt'simpossibleforustoheareverything________isgoingonintheworld.[]A．whichB．whatC．thatD．where
It'simpossibleforustoheareverything________isgoingonintheworldIt'simpossibleforustoheareverything________isgoingonintheworld.
[]
A．whichB．whatC．thatD．where
