[ Grammar ]
They have cleaned the windows…
A. have they?
B. didn’t they?
C. haven’t they?
D. hadn’t they?

Random Topics:
Definite pronouns (Subject, Object, Reflexive)Will or Going toAntonymsFuture Time and TensesIELTS GrammarModals and PhrasesConditional Sentences Type 1Western Europe CountriesInfinitive and GerundsPersonal & Possessive PronounsOther quiz:
Relative Clauses › ViewTom had had enough of school, ____is why he decided to join the Marines.
A. that
B. what
C. whom
D. where
E. which
Definite Articles › View
London, Paris, Warsaw,
A. a
B. an
C. the
D. –
Functional Sentence Types › ViewWhat type of sentence is ‘Clean your room’?
A. Imperative
B. Exclamatory
C. Interrogative
D. Declarative
Passive Voice & Tenses › View
They (make) _________ five films since they left college.
A. had made
B. have maked
C. have made
D. made
