Recognize the conditional perfect continuous sentence: If she had been studying all night, she would have aced the test.
A. If she had been studying all night, she would ace the test.
B. If she had been studying all night, she would have aced the test.
C. If she had been studying all night, she aced the test.
D. If she was studying all night, she would have aced the test.

Random Topics:
Present Perfect Tense and Simple Past TensePerfect TensesGerunds & Infinitives + VocabularyPronouns, Sentence Structure, and ApostrophesEssential and Nonessential ClausesProverbsGerundsVerb TensesContrastive ConjunctionsSentence CompletionOther quiz:
TOEFL › ViewStory of a Bad Boy,a semiautobiographical novel by Thomas Bailey Aldrich, ranks high among books ___________ have incorporated their boyhood experiences.
A. the American authors
B. which are American authors
C. in which American authors
D. are those which American authors
Countable Noun › View
( ? ) …… any soy sauce?
A. There is
B. There are
C. Is there
D. Are there
What is the meaning of the word ‘lichen’?
A. Composite organism
B. Algae
C. Moss
D. Fungus
Reported Speech › View
” Congratulations, you did very well in the competition”
A. The teacher congratulated Jack for doing very well in the competition.
B. The teacher congratulated Jack on doing very well in the competition.
C. The teacher congratulated Jack at doing very well in the competition.
