Today's weather isn't as cold as it was yesterday,( )
问题描述：
Today's weather isn't as cold as it was yesterday,( )
A wasn't B is it C was it D isn't it
Three( ) of the old bridge( ) fallen down.
A fifth,have B fifths,have C fifth,has D fifths,has
答
B 只看前面的 isn't, 改成它的相反形式B three fifths 就是3个1/5, 后面用have