[ Tenses ]
Ethan suddenly realized that he ____ his laptop on the train.
A. has left
B. left
C. had left
D. leave
Select your answer:

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Tenses › ViewAmelia and Thomas are dancing tango next week.
A. Present
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I’ve been _____since 5 o’clock in the morning.
A. study
B. studies
C. studied
D. studying
