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AntonymsCountable & Noncountable NounsModals and Past TensesConditional TensesPresent Simple: affirmative, negative, interrogativeModals, Infinitives and GerundsQuestion WordsWord FormationPassive Voice - Present TensesTenses and OpinionsOther quiz:
Tenses › ViewThey … for an hour before the doctor came.
- had been waiting
- waited
Vocabulary › View
The biggest ___________ I face to going to college in Canada is money. It is so expensive.
A. barrier
B. fit in
C. empathy
D. courage
