[ Grammar ]
Listen! Someone ___ at the front door right now.
A. knocks
B. knocked
C. is knocking
D. knock
Select your answer:

Random Topics:
Grammar: Used to, Would, Be used to, Get used toGrammar and PunctuationModals of Obligation and PermissionTag QuestionModal Verbs of PermissionAdverb Types and TensesPersonal pronouns + possessive adjectives + Introgative pronounsRoot WordConjunctivesPast Perfect TenseOther quiz:
Modals › ViewP.E. and music aren’t compulsory. You __________ study them.
A. have to
B. should
C. must
D. don´t have to
Homonyms › View
The whole is worth more than the ___ of its parts.
a. some
b. sum
