I would think b because its good to keep a record. If it is constantly changing, then its good to have the record in case it changes back to one you already had.
There defination to sable used in the line is...
Firmly fixed
" And draws the firm;y fixed curtains of the night,"
Answer:
Is that a story or a question!
I believe you mean to say 'gerund' phrases, not rerun phrases - there is no such term in grammar.
Anyway, gerund phrases look like verbs - they are formed by adding -ing to the verb itself (sleeping, drinking, eating, etc.). However, they are not used as verbs - they are used as nouns in a sentence. For example:
Sleeping is good for you.