When your mother want to tell you something, she uses words. Birds can’t speak 1._____ we do, but some birds can make sounds to warn their young of 2._______.They have 3.________own way of making the young birds do certain things.
The jackdaw is a kind of black bird4.______lives in Europe. Jackdaws live together in flocks. Young jackdaws do not know their enemies. When an old jackdaw sees a dog, it makes a loud rattling5.______.The young birds know this sound means6._______is nearby. The sound warns them7._______their enemies.
8._______ a young jackdaw is in a 9______ place, a jackdaw parent 50._______over the young bird’s back from behind. The parent’s tail feathers move 11.______from side to side. It’s trying to say “12______”.At the same time, the 13.________bird calls out Key-aw Key-aw, which seems to say FLY HOME WITH ME. The young bird then follows the older14_______to go home.
Young jackdaws15._______ learn what certain sounds mean. They know the meaning of these sounds from they hatch.

A．like B．as C．look like D．seem

A．safe B．coming C．danger D．eating

A．them B．themselves C．his D．their

A．that B．who C．/ D．where

A．sound B．voice C．noise D．sounds

A．parents B．an enemy C．mother D．a friend

A．meeting B．to meet C．knowing D．to know

A．If B．Unless C．Whether D．Because

A．funny B．dangerous C．secret D．far

A．flies B．fly C．will fly D．flew

A．quick B．soon C．quickly D．quietly

A．Be quick B．I love you C．Go ahead D．Follow me

A．parent B．child C．enemy D．parents

A．it B．one C．ones D．that

A．have to B．must C．don’t have to D．mustn’t