[ Subject Verb Agreement ]
He could (has, have) blocked her along the way.
A. has
B. have
Select your answer:

Random Topics:
Tenses and Time MarkersGrammar: Parts and PunctuationModals for Advice, Obligation/Prohibition, Necessity and Lack of NecessityGerund or to InfinitiveLinking Verbs and TensesPunctuationOrder of AdjectivesActive Voice-Present tensePresent or Past TensesApostrophes and Quotation MarksOther quiz:
Present Tenses › ViewFor decades, economists ___ about the benefits and risks of globalization.
A. have debated
B. are debating
C. have been debating
Grammar › View
The earth ………. around the sun.
A. Go
B. Going
C. Is going
D. Goes
