[ Past Tenses ]
Which tense shows an action that was happening before another past action?
A. Past simple
B. Past perfect
C. Past perfect continuous
D. Present perfect

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Passive Voice in Past and Present Tense › ViewDid the police arrest the suspect?
A. Were the suspect arrested?
B. Was the suspect arrested?
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Carlos washes the dishes, ___ ____?
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It is ____________ that Harold is in a good mood now because he has a big smile on his face.
A. proper
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C. obvious
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