[ Present Perfect Tense ]
They ______________ the homework.
A. haven´t did
B. hasn´t did
C. haven´t done
D. hasn´t done

Random Topics:
Transitive and Intransitive VerbTenses, Tag Questions, Phrasal VerbsSo Such Enough TooShould, Should not haveInfinitive or GerundVocabularyModals and AdviceImperative SentencesWord Form & Verb TenseIndirect SpeechOther quiz:
Gerund, Infinitive, Bare Verb › ViewThe employer forced his employees _______.
A. to corrupt
B. corrupting
C. corrupt
D. to corrupting
Vocabulary › View
Rita keeps up with fashion and buys the ____ styles, but her sister wears the same basic style, year after year.
A. little known
B. up-to-date
C. older
Comparative Adverb › ViewThis restaurant is bad, but the restaurant we ate at last week was _____
A. Bad
B. The worst
C. Worse
Adverb › View
Which is a proper adverb?
A. Fast
B. Quick
C. Deftly
D. All of the above
