根据对话内容，从方框中选择恰当的单词填空，使对话完整、通顺

follow, ground，lead，brave，voice

A：Hey, Gretel! What can you see on the? Can you see any bread?

B：No, Hansel．

A：That's too bad．We can't find the pieces of bread．We might be lost．

B：What should we do, Hansel?

A：Take it easy! Be ! Listen! What can you hear?

B：I can hear a bird's ．

A：Yeah! The bird ate our bread．it and then we might find our way．

B：You mean the bird will us through the forest．

A：I think so．

B：Great! Let's go!