QUESTION: Fix punctuation: Morning temperatures will be around 15 C During the day they will reach a maximum of 30 C Low temperatures at night will be around 18C Easterly winds are weak
ANS: Morning temperatures will be around 15 C. During the day they will reach a maximum of 30 C. Low temperatures at night will be around 18C. Easterly winds are weak.
QUES: Actually a problem solved very fast A connector had some corrosion and it was changed with a new one

correct the punctuation.

CORRECTED: Actually a problem solved very fast: A connector had some corrosion, and it was changed with a new one.
Question: The 19th Century moved inexorably towards the repudiation of the Sanhedrins avowals to Napoleon towards the resegregation of the Jews towards the reestablishment of that theocratic state in the midst of states the danger of which Tiberius had depicted before the Christian era began
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Answer: The 19th Century moved inexorably towards the repudiation of the Sanhedrin's avowals to Napoleon, towards the re-segregation of the Jews, towards the re-establishment of that theocratic state in the midst of states, the danger of which Tiberius had depicted before the Christian era began.
She had prepared some frog legs for Luigis next experiment

Can you repeat this sentence, but add in punctuation?
She had prepared some frog legs for Luigi's next experiment.
input: Move your contacts to your phone and keep your friends close
fixed: Move your contacts to your phone and keep your friends close.
Special envoys were sent from Spain to exert royal authority over him

Can you repeat this sentence, but add in punctuation?
Special envoys were sent from Spain to exert royal authority over him.