The professor could not understand _____ most of the students failed the exam despite the fact that the material had been thoroughly discussed in class and additional study sessions were provided.
A. why
B. if they were paying attention during the lectures,
C. while he was explaining the difficult parts,
D. because they seemed well-prepared during the review,

Random Topics:
Adjective & AdverbPresent Simple PassiveSentence LabelingPronouns, Sentence Structure, and ApostrophesGrammar - FragmentsSentences and Non SentencesHave to/Has toTenses & PrepositionDependent ClausesArticles with Proper NounsOther quiz:
Mixed General Quiz › ViewNo, he can only ask you what _____ doing there.
a. are you
b. you
c. you are
Grammar › View
GRAMMAR: HAVE/GET SOMETHING DONE. Choose the best option to complete the sentence.
Call us and you will __________________for free.
_
A. get to collect your old fridge
B. your old fridge collected
C. get your old fridge collected
Grammar › ViewI’m fed up with this terrible weather — it’s so … .
A. depressing
B. depressed
Coordinate Conjunction › View
In the example below, what is the coordinate conjunction joining?
Tom will bring the chairs, or Mary can get them from the closet.
A. words
B. phrases
C. sentences/ clauses
