[ Grammar ]
. They ____ a science project at school last week.
A. start
B. started
C. starts
D. starting
E. starter

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Because / soContrast Linking WordsIdiom and TensesAdjective OrderModal Verbs of Certainty and PossibilityConjunctions and PrepositionsPrepositions Of PlacePresent Simple & Present Progressive TenseVerbs & Verb Tensesa, an, the, zero articleOther quiz:
Conditional Sentences › ViewThey … let you on the plane unless you have a valid passport.
A. had
B. have
C. will
D. won’t
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I find it difficult to read books _____ include long descriptions of places.
A. who
B. which
C. whose
Vocabulary › ViewWhat does ‘in turn’ mean?
A. the action of thinking hard about something
B. one after the other
C. the treatment of an illness or injury over a period of time
D. the ability to concentrate
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When Juan was two, he __________ already speak very well.
A. might
B. could
C. can
D. should
