Answer:
waited
Explanation:
I waited for the bus many times in my life.
because wait is in the brackets so you'll change it to past tense
The gray room was awfully dull.
The answer is: [D]:
___________________________________________________________
They are often used to combine choppy sentences.
______________________________________________________________
Conjunctions are often used to combine choppy sentences.
____________________________________________________________
Note: The questions asks about CONJUNCTIONS —NOT about "contractions".
____________________________________
Choice "A" is incorrect. They are not used to combine two or more LONG sentences. If sentences are already long, then do not need to be combined with a conjunction.
_____________________________________
Choice: "B" is incorrect. To the contrary, the use of conjunctions actually makes sentences longer.
________________________________________
Choice "C" is incorrect. To the contrary, the use of conjunctions should be used (appropriately, of course) in essays. The use of "contractions" should not be used in essays or formal writing.
________________________________________
Choice "D" is correct. They are often used to combine choppy sentences for better reading and engagement.
_______________________________________________________