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Future perfect and future perfect continuous
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We (not wear) glasses for a long time.
won't have been wearing
Oops!
Okay!
Flying cars (become) popular by 2100.
will have become
Oops!
Okay!
People only (eat) processed food for a long time.
will have been eating
Oops!
Okay!
We (not buy) batteries in a long time.
won't have bought
Oops!
Okay!
We (use) cleaner fuels for some time.
will have been using
Oops!
Okay!
The cure for some serious medical conditions (find) by 2100.
will have been found
Oops!
Okay!
People (travel) to the moon for some time.
will have been traveling
Oops!
Okay!
Some planets (discover) in 30 years from now.
will have been discovered
Oops!
Okay!
USB drives (dissapeared) by 2050.
will have dissapeared
Oops!
Okay!
My friends and I (reach) the age of 80 by 2050.
will have reached
Oops!
Okay!
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