[ Grammar and Vocabulary ]
She is studying the difference ______________ UWE and UEE.
A. in
B. on
C. between
D. from
E. with

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Infinitives for reasonsGrammar - Sentence StructureModal Verbs and Contrastive ConjunctionsPast ModalsNountoo / enoughSome & AnyPersonal pronouns + possessive adjectives + Introgative pronounsVerbs: Action, Linking, and HelpingPresent Progressive or Present SimpleOther quiz:
Vocabulary › ViewMy plan is about to ____ and I will finally see my siblings again.
A. flight
B. airplane
C. land
Grammar › View
I _____ wear a tie; I do it because I like wearing ties.
A. have to
B. don’t have to
C. must
D. mustn’t
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A. Ability
B. Permission
C. Request
D. Offers
E. Suggestions
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There is the most difficult problem ___ we must discuss.
A. which
B. whom
C. that
D. whose
