[ Subject-Verb Agreement ]
Jeffrey (help, helps) Mrs. Trent shelve books.
A. help
B. helps

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IdiomsCommon Grammar Mistakes and Spelling TipsConjunctions, Interjections and DeterminersArticleSentence and FragmentWho am I?Verbs and PrepositionsPhrasal Verbs and Verb FormsComparative AdjectiveGrammar - TOEICOther quiz:
Modal Verbs › ViewIf you’re under 13, you ______ get your parents’ permission.
A. can
B. have to
C. might
D. should
Modals › View
The expression ” Do not make any scratch on your class wall” is
A. permission
B. prohibition
C. invitation
D. instruction