Verbs

I/you/we/they demonstrate. He/she/it demonstrates. The present participle is demonstrating.

"Spend" is the action verb. Time is the direct object. You are doing what to the time? You are spending it. This makes "spend" the verb.

:)

No, faster is not a noun because it is neither a person, a place, nor a thing.

Faster is actually an adjective.

Past tense verbs indicate actions that have already happened, while future tense verbs indicate actions that will happen. Verbs in the past tense often end in -ed or changed form to show the past action. Verbs in the future tense often use auxiliary words like "will" or "shall" to indicate the action will occur later.

A regular verb will simply add -ed on to the end to form the past tense and past participle.

For example, to form the past tense of the verb 'laugh', we add -ed to create 'laughed' which is also the past participle of the verb.

Irregular verbs, however, don't add -ed to form the past tense or past participle.

For example, the past tense of the verb 'see' becomes 'saw' whilst the past participle becomes 'seen'.

The past tense for "you have a hole in your coat" would be "you had a hole in your coat."

Will shrink.

Study is the present tense. Studied is the past tense.

Yes, in a sentence with an action verb, the direct object typically comes after the verb. The direct object is the noun or pronoun that receives the action of the verb.

Select is a verb already. Other verbs are selects, selecting and selected.

Some example sentences for you are:
"I will select a new one".
"She selects a new handbag".
"We are selecting a gift".
"They selected the blue one".

The past tense is stunk.

"Playful" is an adjective, not a noun or a verb. It describes someone or something that is full of play, fun, or humor.

no its a adjective because it doesn't dictate a step or action

The verb "sang" is the past tense form, while "sung" is the past participle form. So, you would use "sang" when referring to the past action of singing, while "sung" is used when paired with another verb (e.g., have sung, had sung).

The past of drag is dragged. Example: The firefighters dragged the smoldering mattress out of the house.

As a linking verb: That swamp smells foul. As an action verb: My old hound smells badly now; on our last hunt he missed a pheasant only three feet away from him.

The library segregates oversized books and puts them on a separate shelf.

In the sentence, Clara had gave or given the tape to Ana, the correct verb to be used is given. In this past perfect sentence the auxiliary verb hadalways takes another verb, given, in the past participle form.

What were you doing yesterday ?

I was eating my breakfast when the phone rang

The present progressive tense of "judge" is "judging." For example, "She is judging the competition."

both, you can only decide only upon the sentence.

The past participle of "dress" is "dressed."

Investigate can function as both a verb and a noun. As a verb, it means to carry out a systematic inquiry or examination; as a noun, it refers to the act of investigating or the process of conducting an investigation.

The ellos form of the verb "deber" in the present tense is "deben."