[ Must / must not ]
This is a secret.You… tell anybody,
A. must
B. mustn’t

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Future Tenses, Conditionals and Professions › ViewThis person delivers letters and packages to your house. Who are they?
A. Firefighter
B. Postman/Postwoman
C. Mechanic
D. Scientist
Vocabulary › View
Even though Will looks like a(n) _______________ old man who cannot care for himself, he is actually an active senior who enjoys skydiving.
A. voluble
B. wizened
C. sepulcher