In these questions a sentence/part of the sentence is in bracket. Below are given alternative to in Bracket sentence/part of the sentence at (a), (b), and (c) which may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (d):Question :They (knocked down) ten houses when they built the new road.

• A. Ruptured
• B. removed
• C. pulled down
• D. no improvement