Correct the sentence with the appropriate form of the underlined verb.
Parents should tell their children to exercise great care when crossed busy roads.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. crossing.
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The sentence is giving advice to parents about what they should tell their children to do regularly or as a general rule (i.e., exercise care when they are in the process of crossing busy roads).
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The present participle (verb-ing), as in "crossing," denotes the continuous aspect of an action. It implies that children need to be cautious during the process of crossing busy streets, rather than only once they have finished crossing.
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Clarity and Correctness: The use of "crossing" makes the sentence clearer and grammatically correct in the context of advising on ongoing actions.