[ Subject - Verb Agreement ]
One of the machines ______ down at least once a month.
A. break
B. breaks
C. breaking
D. broken

Random Topics:
Vocabulary Spelling GrammarIndirect SpeechAdverb ClausesGrammar - much, many, a lot ofGerunds and InfitinitivesVerbs of movementFood VocabularyPresent or Past TensesModals and Past ModalsPhrasal Verb & Prepositional PhraseOther quiz:
Modal Auxiliary › ViewYou often have headaches. I think you ….. visit a neurologist.
A. won’t
B. might
C. may
D. can
E. should
Vocabulary › View
lasting for a long time (adj)
A. perennial
B. salvage
C. spasmodic
Grammar › ViewAfter the children finished their dinner, they went to bed ______ listened to a bedtime story before falling asleep.
A. that
B. and
C. so
D. while
Past Tense and Past Continuous › View
The farmers __________ the field when it began to pour.
A. were ploughing
B. had ploughed
C. had been ploughing
D. ploughed
