[ Grammar ]
Someone paid the bill.
A. Who did pay the bill?
B. Who paid the bill?

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Wish clauseNounPoetryRelative Clauses and Past PerfectGrammar AssessmentQuantifiers and AdjectivesFirst & Second ConditionalGrammar ModalsClause Markers TOEFL GrammarHave vs. HasOther quiz:
Subject Verb Agreement › ViewSelect the appropriate verb: Neither of the boys ______ finished their homework yet.
A. is
B. was
C. has
D. have
Causative Verb › View
The increase in layoffs over the past two fiscal periods has caused everyone_____ less secure.
A. Was felt
B. Feels
C. Felt
D. To feel
While Hoa …………… the piano, her mother was doing the washing-up.
A. were playing
B. was playing
C. play
D. played
Gerunds and Infinitives › View
One negative influence is (argue) ______. People who argue are more likely to get colds than those who do not.
A. argue
B. to argue
C. arguing
