Direction: Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select the option "No improvement" required.

David denied to help William in studying.

The correct answer is- 'denied helping'
Key Points

• Use 'denied helping' in place of 'denied to help' 
• We know that the verb 'Deny' always take gerund after it so we'll use 'helping' instead of 'to help'
• A gerund is the –ing form of a verb that functions the same as a noun.
  • Example: 'Running is fun' (In this sentence, “running” is the gerund. It acts just like a noun)

Hence the correct sentence is- David denied helping William.

Additional Information

• 'avoid, celebrate, consider, contemplate, defer, delay, detest, dislike, dread, enjoy, entail, escape, excuse, finish, forgive, involve, keep' these verbs used always gerund after it.