Write the correct form (comparative or superlative) of the modifier in parentheses. I have never experienced anything _____ than the riverbank that morning. (peaceful)

Write the correct form (comparative or superlative) of the modifier in parentheses. The path was winding and _____ toward the top of the hill. (narrow)

Underline the word in parentheses that best completes each sentence. We'll do our homework and (than, then) we'll go to the park.

Correct the word in italics. If the word is correct, write C in the blank. _____ Is $\mathit{this}$ the right amount of glue to hold the boards together?

Correct the word or words in italics. If the sentence is correct, write C in the blank. _____ You $\mathit{should \ of}$ told me you didn't want to see this movie.

Identify the part of speech of each italicized word: N (noun), pro. (pronoun), V (verb), adj. (adjective), or adv. (adverb). _____ Mechanical toys were the $\mathit{predecessors}$ of robots.