Do you know pigeons（鸽子）? They are a ____ bird. They are  ___ and gray. Some people say they are not ____, but they are cute and ____. Many people keep them as pets. ____ do people say pigeons are smart? Because pigeons can ____ letters from ____ place to another(另一个). And they know how to ____ home. We often ____ the pictures of pigeons with olive branch(橄榄枝)in __  _ mouths. We give the name—peace pigeons(和平鸽) to them. They are the symbol of peace.

A．kind of B．kinds C．kind D．kinds of

A．green B．red C．white D．yellow

A．ugly B．nice C．lazy D．interesting

A．small B．fun C．smart D．big

A．Why B．What C．Where D．When

A．give B．have C．look D．take

A．some B．two C．one D．no

A．go to B．get C．arrive at D．get to

A．look B．read C．watch D．see

A．their B．them C．they D．theirs