Answer:
<u>secondhand or second-hand</u>
Explanation:
A compound adjective is an adjective made up of two or more words, in which either of those words can be a noun, an adverb, a verb in their past participle form or a verb in their present participle form. Most of the time, these words are joined by a hyphen. The word <em>secondhand</em> is an adjective because it describes the noun "smoke", and it is compound because it is made up f two nouns <em>second </em>and<em> hand</em>. This adjective can also be separated with a hyphen: <em>second-hand.</em>
The other word that may look like a compound adjective, but it is not one, is well-being, because it is a word made up of an adverb + the verb be in their present participle form, HOWEVER, it does not act as an adjective but as a noun.
Answer:
The <u>nervous</u> system coordinates all of the body's activities.
The <u>excretory</u> system eliminates wastes.
Muscles work in pairs to move the bones of the skeletal system. - TRUE
The respiratory and circulatory systems work together to move <u>oxygen</u> into and throughout the body.
Answer:
In my opinion, it could be D.
C is wrong just by using common sense, B and A doesn't make much sense either. But D seems reasonable.
