Prepositions describe the relationship between words in a sentence. They usually come before a noun or pronoun and show their relationship through a time, place, or direction.
Examples of prepositions:
The dog lays beside the sofa. ⇒ <em>Beside</em> is a preposition of place.
After a few weeks, the flower began to bloom. ⇒ <em>After</em> is a preposition of time.
The woman slowly walked away from the mad dog. ⇒ <em>Away from</em> is a preposition of direction.
A. Serpentine is your answer
I don't know much about the Sydney mines, but from the context, I can infer that the tunnels were unsafe. Whether being that they were collapsing, or they were filled with poisonous gasses.
How long the chicken needs to be roasted for
The store display rotates 40 times every half hour meaning that it will rotate 80 times every hour. To find how many times it will rotate in 4 hours, you can do 80 times 4. This is 320 rotations.
Also, please try and correctly list your question as this does not pertain to this subject.
