[ Tenses & Conditional Sentence ]
She ___ for two hours before the guests arrived at the party.
A. had been cleaning
B. cleaned
C. was cleaning
D. has cleaned

Random Topics:
Noun, Quantifiers and SuffixesConjunctions - Conjunctive AdverbsPresent, Past and Future TensesVerb Tenses and AgreementTenses of VerbsPresent and Past Perfect TensesWould rather/ would prefer/ would likeFigure of SpeechPresent Perfect Negative and InterrogativePresent simple or Past simpleOther quiz:
Noun Phrases › ViewWhat period of time does this refer to?
in the eighteenth century
A. general past time
B. specific past time
C. present
Grammar › View
We don’t have ________ to take a taxi. We’ll have to walk.
A. enough money
B. plenty of money
C. money enough
Vocabulary › ViewTo study something in more detail.
A. Research
B. Persuade
C. Launch
D. Target
Tenses and Voice › View
Which verb shows future tense?
A. Walked
B. Is
C. Will jump
D. Eats
