Question: 
Write a function to abbreviate 'road' as 'rd.' in a given string.


Model's Code:
def road_rd(s):
    return s.replace("Road", "Rd.")



Sample Correct Code:
import re
def road_rd(street):
  return (re.sub('Road$', 'Rd.', street))


Asserts:
assert road_rd("ravipadu Road")==('ravipadu Rd.')
assert road_rd("palnadu Road")==('palnadu Rd.')
assert road_rd("eshwar enclave Road")==('eshwar enclave Rd.')


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 812 of 974: 619/812 (76.23152709359606%): success