Fill in blank [31] with a suitable form of the verb in brackets:
Suddenly, the bushes _27_ (rustle). Father wolf dropped to the ground, _28_ (prepare) to leap at the predator. "_29_ (hold) on!" cried mother wolf, "It's a mancub!" It _30_ (be) a little baby who was just learning to walk. He _31_ (look) into father wolf's face and _32_ (laugh). Father wolf _33_ (close) his jaws on the child's back and _34_ (carry) him to mother wolf and _35_ (lay) him down among her cubs.