The principal parts of a(n) verb are formed by adding -ed, -d , or -t to the present part.

a. irregular
b. regular

The principal parts of a B. regular verb are formed by adding -ed, -d, or -t to the present part.

Explanation:

An English verb can be either regular or irregular, according to their formation in the simple past and in the past participle. Regular verbs are formed by adding -ed, -d, or -to to the infinitive, while irregular verbs can end in a wide variety of ways with no consistent pattern.

Example of regular verb: start-started.

Example of irregular verb: feel-felt.

the correct answer would be d.

"fire and ice" is one of robert frost's most popular poems. it was published in december 1920 in harper's magazine and in 1923 in his pulitzer prize−winning book new hampshire. it discusses the end of the world, likening the elemental force of fire with the emotion of desire, and ice with hate.

c. the power of desire is greater than the power of hate.