I used to have a teacher who said this as well. The best way to understand would be to show examples of how to specify such terms as “stuff” and “things”. For instance: “The birds have lots of stuff.” That was not clear because the reader does not know what the “stuff” is. Instead, the text could be changed to: “The birds have lots of feathers.” Now the reader knows what the stuff is because it has been replaced with a more specific word. If you go over multiple examples in your head, it will become easier to comprehend and you will get used to doing it.
Answer:
Adverb clause.
Explanation:
<em>The phrase in the given statement in brackets exemplifies an adverb clause as it is acting as a modifier to the principal clause. An adverb clause is the group of words functioning as an adverb(modifier) in the sentence and describes the condition in which the action is performed or will be performed. Similar to this sentence, as here "if we arrive by 8 a.m." (adverb clause)beginning with the subordinating conjunction "if", describes that "Our coach will be happy".</em> Thus, the second option best complements the purpose of the clause.
I think 21 is the third choice, 23 is the first choice, 25 is the third choice, and 26 is the fourth choice.
