Cognizant Speech and Voices Quiz

Friend is a common noun.

Pleasantly is the adverb form of the adjective PLEASANT.

While the word 'first' can be used as a pronoun, adverb and noun, here in this sentence, First is used as an adjective because it is describing that the person stood first meaning, that he left everyone behind in the race. It describes a feeling.

Here repulsive is a describing word.

For is a preposition.

It should be - Our environment ought to have been saved. Here the environment is the subject, and the sentence is in past perfect tense, thus 'have been saved' will be the right choice.

It will be - The conclusion was arrived at by him. Changing the voice from active to passive includes the use of 'by' in a sentence.

It will be -  The lie was spoken by Sahil. Changing from active to passive voice. Lie is the subject and Sahil is the predicate.

Susheela was asked why she was sad. Changing from active to passive voice. When changing I in passive voice, we do not use the word me. It is understandable without its use.

It will be -He must be helped. Changing a sentence into passive voice, the sentence takes the form of perfect tense. So here a simple future tense sentence 'I must help him' becomes 'he must be helped' where 'be helped' is perfect tense. Also, the use of 'by me' is optional.