Corrected:

a. His wisdom consisted in his handling the dangerous situation successfully.
b. Many a girl was appearing in the examination.
c. The vehicles run fast on the Motorway.
d. Smoking is injurious to health.
e. He availed himself of this situation very intelligently.
f. The black vermin are an odious creature.
g. What to speak of meat, even, vegetables were not available then.
h. No sooner did we leave our home than it started raining.
i. The little money I had I spent on the way.
j. The criminal was sent to the goal.