A Complete with a word from the list.
along/down/into/off/out/back/past/towards/through/up

I We drovea lot of tunnels on our way to St Moritz,
2 When it started to rain we wenta cafe to wait until it stopped,
3 She walked the street, looking in all the shop windows,
4 When the dog started running me I was terrified
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1) We drove through a lot of tunnels on our way to St Moritz.
Explanation: The word "through" is used to show movement from one side or end of something to the other side or end. In this context, it means that the speaker and others passed through various tunnels while traveling to St Moritz.

2) When it started to rain we went into a cafe to wait until it stopped.
Explanation: The preposition "into" is used to indicate movement or direction towards the inside of something. In this case, the speaker and others entered a cafe to seek shelter from the rain.

3) She walked along the street, looking in all the shop windows.
Explanation: The word "along" suggests movement in a line or direction parallel to or beside something. The person in question was walking next to the street, while simultaneously observing the displays in the shop windows.

4) When the dog started running towards me I was terrified.
Explanation: The preposition "towards" indicates movement or direction in the direction of something or someone. In this situation, the person speaking was frightened when the dog began to run in their direction.