{{B}}quEstions 19 to 22 ArE BAsED on thE ConvErsAtion you hAvE just hEArD、{{/B}}

A．shE CAn hEAr thEm Crying vEry louDly At thE zoo.
B．shE hAs hEArD thEm pAnting AnD wAs tolD it wAs lAughtEr.
C．shE hAs rEAD ABout it FromDArwin.
D．shE usED to work At A zoo.