[ 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:
Grammar and vocabulary › Viewordinary, nothing special
______ computer/supermarket
A. mainstream
B. middle-of-the-road
C. conventional
D. run-of-the-mill
Present Tenses and Vocabulary › View
My boss asked me to deal ………… the customer complaint.
A. with
B. on
C. at
D. in
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
