[ Tenses ]
Listen! Someone (knock) __________ at the door.
A. Present Continuous – is knocking
B. Simple Present – knocks
C. Simple Present – knock
D. Present Continuous – are knocking

Random Topics:
Adverbs, Modals, Preposition of timePresent simple or Past simpleConditionals Type IModal Auxiliary VerbsIf ClausesModals and PrepositionGrammar Like & Linking VerbParallel Structure or Combining SentencesArticleCoordinating and Subordinating ConjunctionsOther quiz:
Figurative Language Vocabulary › ViewWriters Attitude
A. Personification
B. Mood
C. Alliteration
D. Tone
Articles › View
The president is the most powerful person in _____ United States.
A. the
B. /
C. a
D. an
Verb Tenses › View. Which tense describes a habitual action in the past?
A. Past perfect
B. Simple past
C. Past progressive
D. Present perfect
Grammar › View
The cats _______ running around the front yard.
A. is
B. was
C. were
