Future Perfect vs. Future Perfect Continuous

By this time next year, I __________ enough money to travel.

• will have saved

• will save

• will have been saving

Answer explanation

completed action

By this time next year, I __________ for this company for five years.

• will work

• will have worked

• will have been working

Answer explanation

duration

Before you come home, I __________ the entire house.

• will have cleaned

• will clean

• will have been cleaning

Answer explanation

Finished before another action

When I get my degree, I __________ for more than 10 years.

• will have studied

• will have been studying

• will study

Answer explanation

focus on how long

By December, we __________ the English course.

• will have finished

• will have been finishing

• will finish

Answer explanation

result completed

By December, we __________ classes every weekend for four months.

• will have taken

• will have been taking

• will take

Answer explanation

emphasizes time duration

By the time you arrive, we __________ dinner.

• will have cooked

• will have been cooking

• will cook

Answer explanation

action completed before another time

By the end of this month, she __________ here for six months.

• will have worked

• will have been working

• will be working

Answer explanation

it focuses on duration

By tomorrow morning, they __________ the presentation.

• will have finished

• will have been finishing

• will finish

Answer explanation

result completed

When you get to the airport, I __________ for over two hours.

• will have waited

• will have been waiting

• will wait

Answer explanation

ongoing action until a point