1.(unless/when)George sees a dog in the street, he freezes because he's terribly afraid of them.​

When George sees a dog in the street, he freezes because he's terribly afraid of them.

Пояснения :

Когда Джордж видит на улице собаку, он замирает, потому что ужасно их боится.

1. When George sees a dog in the street, he freezes because he's terribly afraid of them.​