[ 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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Pronouns › ViewOur teacher, Madam Hong taught __________English.
A. we
B. they
C. us
Present Perfect Tense › View
Recognize the irregular verb in the sentence: ‘She has sung in the choir.’
A. sung
B. singed
C. sing
D. sang
Modals - should › ViewYou _ cross the street at red traffic lights.
A. should
B. shouldn’t
Vocabulary & Grammar › View
It is ____________ that Harold is in a good mood now because he has a big smile on his face.
A. proper
B. plastic
C. obvious
D. eager
