[ Past Tenses ]
While she ___ her thesis, the power went out.
A. wrote
B. was writing
C. had written
D. had been writing

Random Topics:
Simple vs Present Continuous TensesPresent Perfect and Present Perfect Progressive TensesPrefixes SuffixesPreposition & Relative ClausesModifiersSubject-Verb AgreementSubordination ConjunctionsPronouns, Sentence Structure, and Figurative LanguageArticles and NounsSubordinating ConjunctionsOther quiz:
Personal Pronoun › ViewMy parents’ house is very big, but ____ garden is small.
A. its
B. his
C. her
D. my
E. their
Vocabulary & Grammar › View
The farmer is working in the field on his ___________.
A. buses
B. tractors
C. helicopters
D. boats
Past Perfect and Past Perfect Continuous Tense › ViewI ___________ (wait) for her for hours before she came.
A. had been waiting
B. has been waiting
C. had been waited
D. had waited
Verb Form › View
He’ll try…………………………the same mistake again.
A. not make
B. not to make
C. to not make
D. not making
