[ Modal Verbs ]
You ______ have to pay in cash, as we do not accept credit cards.
A. could
B. can
C. should
D. will

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Pronouns ( Interrogative )Gerund after Prepositions and Certain VerbsInfinitives and GerundsModals Deduction: cant /mustGrammar TOEFLInterrogative PronounsSpellingGrammar RulesThe Future Simple TensePronoun & Present SimpleOther quiz:
Grammar › ViewEvery weekend, my sister ______ chicken rice for my family.
A. cooking
B. cooks
C. cooked
D. cook
Grammar › View
After the argument, they _______ just in one minute.
A. stay up
B. get up
C. make up
D. set up
Lexico and Grammar › ViewIn fact, to move at any speed the polar bear uses ______ do most other mammals.
A. twice energy more than
B. more than twice energy
C. twice as much energy as
D. much as twice energy as
Grammar › View
Ingrid, Paul! Please behave ______________
A. Themselves
B. Yourself
C. Yourselves