By 2050 scientists ______ a cure for cancer. A. Will ...

★ Future Perfect Tense

By 2050 scientists ______ a cure for cancer.

A. Will be found

B. Will be founding

C. Will have found

D. Will have founding

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The movie will have finished by the time I get home.
What does it mean?

A. I won’t watch the film.

B. The film is good.

C. I can watch the film at home.

D. I don’t get home until the film finishes.