[ Modal Verbs ]
You (walk) the dog twice a day, or else you will clean its piss from the floor.
A. have to
B. should
C. must
D. mustn’t

Random Topics:
Grammar of Conjunctions and PrepotitionsAdverbs, Infinitives, Definite ArticlePast Simple vs Present SimpleModal "Have to"Modal and Auxiliary VerbsGrammar RulesModal Verbs of PermissionIndefinite and Intensive NounFuture FormsSubject Verb Agreement and Verb TensesOther quiz:
Grammar › ViewYou _____ your mistakes at that time. Now it is too late to apologize.
A. should admit
B. should have admitted
C. must admit
D. must have admitted
Grammar › View
The sun _______ in the west.
A. set
B. sets
C. are
Conjunction › ViewIdentify the appropriate conjunction: “He must finish his homework ____ he can go out with friends.”
A. before
B. so
C. but
Present Perfect › View
The present perfect mainly is used to talk about…
A. Experiences
B. Habits
C. Routines
D. Goals
