Future Perfect & Future Perfect Progressive

I really hope scientists __________ a way to bring electricity to all parts of the world within the next few years.

• will have found

• will find

• can find

• will have to find

Uber __________ the first aircraft without pilots by 2030.

• will launch

• will have launch

• launched

• will have launched

Soon scientists _____________ on alternative energies for more than 50 years.

• will have worked

• will work

• will have been working

• are going to work

Colonizers ___________ on Mars for a while before I die.

• will live

• will have been living

• will be living

• are going to

I know you ________ the reports on TV about the accident before I get home.

• will see

• are going to see

• will have seen

• can see

I'm stuck in traffic. You _________home about an hour before I get there.

• will have been

• are going to be

• must be at

• will have to be