Keep in mind this particular note: (In the discussion of adjectives, we listed a few words that serve as both adjectives and adverbs: "early","late", "hard", "fast", "long", "high", "low", "deep", and "near". These are simply adverbs made from adjectives without the addition of -ly; they are called or referred to as "flat adverbs". Except for a few others such as "soon" and "often", they are the only adverbs that take -er and -est; most of the -ly adverbs take "more" and, occasionally, "most" in forming the comparative and superlative degrees). 

The definition of a flat adverb- A class of adverb that is the same in form as its corresponding adjective: "fast", "high", "early", "late", "hard", "long", etc. 

Now answer questions 1-8. 

Q.1) What is the open class of "early"? 

A. adjective 

B. verb 

C. noun 

D. adverb

Q.2) What is the open class of "late"? 

A. verb 

B. adverb 

C. adjective 

D. noun 

Q.3) What is the open class of "hard"? 

A. noun 

B. adjective 

C. verb

D. adverb 

Q.4) What is the open class of "fast"? 

A. adjective 

B. verb

C. adverb 

D. noun 

Q.5) What is the open class of "long"?

A. adjective

B. adverb

C. noun 

D. verb 

Q.6) What is the open class of the cited word in the following sentence?

We'll have to get up "early" to catch the flight. 

A. noun

B. verb 

C. adjective 

D. adverb

Q.7) What is the open class of the cited word in the following sentence? 

I like to jog in the "early" morning. 

A. verb

B. noun

C. adverb

D. adjective

Q.8) What is the open class of the cited word in the following sentence?

I got up "early" to study for my Spanish test. 

A. adverb

B. adjective

C. verb

D. noun 

Q.9) What is the open class of the cited word in the following sentence? 

The woman (whom) I work with is always "early". 

A. adverb

B. noun

C. adjective 

D. verb