[ Modals of Obligation ]
At my school, we _______________ wear our uniform every day. It’s an obligation.
A. must
B. shouldn’t
C. should
D. have to

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Perfect Tenses › ViewWhat are the signal words for the Present Perfect Tense?
A. yesterday, last week, ago
B. soon, later, tomorrow
C. before, after, when
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We reached __ station __ hour ago.
A. a, a
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A. desirable
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Choose the correct verb: I ___ to bed at 9 pm last night.
A. go
B. went
