[ Grammar ]
Listen! Someone ______ on the door. It must be the delivery man.
A. knocks
B. is knocking
C. knock
D. are knocking
Select your answer:

Random Topics:
Adverb of Frequency and TensesArticles and Nouns-Ing and Infinitive Verb PatternsTransportation VocabularyApostrophes and Quotation MarksGrammar - QuantiflierDefinite ArticlesPresent Simple & Present Continuous TensesHomophone & HomonymPresent Perfect TenseOther quiz:
Sentence or Sentence Fragment › ViewOn the horizon the moon was just coming up.
A. Sentence
B. Fragment
Vocabulary › View
Rudeness or ill-tempered.
A. Gentility
B. Remorseless
C. Petulance
D. Ghastly
