[ Modal Verbs ]
We ___ learn how to clean the weapon.
A. have to
B. had to
C. must
D. mustn`t
E. should

Random Topics:
Grammar - Nouns, Verbs, and AdjectivesPresent Forms and Narrative TensesPhrasal Verb & Prepositional PhraseInfinitiveGrammar for TOEFLFor vs SinceArticles with SubstancesFirst Conditional & Future TensesAdjectives & PrepositionIndependent/Dependent Clauses & Relative ClausesOther quiz:
Conjunctions › ViewHe had just left the house _____ it because to rain
A. until
B. when
C. as soon as
D. although
Intermediate Prepositions › View
I see that you don’t belong ____ this place
A. for
B. to
C. about
D. in