[ Grammar ]
Who has not yet ____ lunch?
A. eat
B. eaten

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Vocabulary and Grammar › View. Many of the people who had been walking on the beach when the _____ struck were killed.
A. famine
B. tsunami
C. flood
D. drought
Gerund › View
The floor ___ by Helen looked very clean.
A. washed
B. washing
C. wash
D. washes