[ Irregular verbs ]
2nd form of know
A. knowed
B. knew
C. known
D. knewed

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A. alert
B. failure
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He looks really tired. He …………….. slept …………. 48 hours.
A. haven’t / for
B. hasn’t / since
C. hasn’t / for
D. haven’t / since
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A. will have
B. won’t have
C. has
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It rained ____ last night, we were all so scared.
A. loudly
B. smoothly
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