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  • The car is running ............................ since it had a service.
Question 1:
The car is running ............................ since it had a service.
A. smoothly
B. more smoothly
C. most smoothly
D. Either smoothly or more smoothly
Feedback Both smoothly and more smoothly are possible here. However, 'more smoothly' is the preferred form.

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Comparatives and Superlatives | Grammar Exercise | Exercise follow Topic