[ Grammar ]
Chocolate bars _____ in the nineteenth century
A. Have been invented
B. Was invented
C. Were invented
D. Had been invented

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Verb + Infinitive or GerundInfinitives and GerundsPresent Simple Affirmative and Negative-ing &-ed AdjectivesPronouns and Subject Verb Agreement1st and 2nd ConditionalsTransitional WordsArticle and Order of AdjctiveArgumentative VocabularyAdverbial Concession ClausesOther quiz:
Conjunctions › ViewI studied hard, ________ I passed the exam.
A. so
B. even though
C. though
D. as far as
Grammar › View
I am going to …….. concert tomorrow.
A. a
B. an
First Conditional › ViewIf you _____ (exercise) every day, you _____ (be) so fit.
A. exercise , be
B. exercise , will
C. exercise , will be
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Which of these words means “they are”?
A. they’re
B. there
C. their