[ Conditional Sentence ]
Mary didn’t work hard enough, so she failed in her exams.
A. If Mary work hard enough, she wouldn’t fail in her exams.
B. Unless Mary worked hard enough, she would fail in her exams.
C. If Marr didn’t work hard enough she would fail in her exams.
D. If Mary had worked enough she wouldn’t have failed in her exams.

Random Topics:
TOEFLUsed to & would & Past SimplePresent Tense (Negatives and Questions)Quantifiers & Modal VerbsTenses and PronounsPrepositions and ConjunctionsPresent Simple and Present ContinuousDependent PrepositionPersonal PronounTenses - Present and PastOther quiz:
Grammar › ViewA lot of people don’t like ____________ the news, but I enjoy it.
A. watch
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Mixed General Quiz › View
Every time it is on the ballot, a plan to split California into two or more states gains a ___ percentage of the vote.
a. higher
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c. high
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must/should › View
They … sports clothes in the gym or they won’t be allowed to play.
A. must wear
B. should wear
