Future Continuous or Future Perfect

When we arrive in Los Angeles we'll need to rest, because we _______ about 800 miles.

• will be driving

• will have driven

• will drive

Answer explanation

➪ We use future perfect because are talking about an action that will be completed before a future time.

By the time you arrive I _______ something spectacular and dinner will be on the table waiting for you.

• will cook

• will be cooking

• will have cooked

Answer explanation

➪ We use future perfect because are talking about an action that will be completed before a future time.

When you get off the train, we _______ for you on the platform.

• 'll wait

• 'll be waiting

• 'll have waited

Answer explanation

➪ We use the future continuous because we are talking about a situation that will be in progress at a certain time in the future.

We _______ on the first train next Monday.

• 'll be leaving

• 'll have left

• 'll leave

Answer explanation

➪ We can use the future continuous instead of the present continuous or be going to to talk about future events that have already been planned or decided.

When I travel to England next year I ________ English for over four years, so I think I'll be ready.

• will study

• will be studying

• will have studied

Answer explanation

➪ We can use the future perfect to talk about the duration of a situation until a certain time in the future.

Please, come at 8. By that time, I ______ my homework and we can go out.

• 'll finish

• 'll be finishing

• 'll have finished

Answer explanation

➪ We use future perfect because are talking about an action that will be completed before a future time. At 8, the homework will already be done.

I'm sure when you call him, he _______ TV. He's always in front of the TV!

• 'll watch

• 'll be watching

• 'll have watched

Answer explanation

➪ We use the future continuous because we are talking about a situation that will be in progress at a certain time in the future.

We are visiting a new city every week. By the end of the summer, we _______ all the most important cities in Europe.

• will visit

• will be visiting

• will have visited

Answer explanation

➪ We use future perfect because are talking about an action that will be completed before a future time. We will finish visiting all the important cities in Europe before the end of the summer.

In less than 2 years, my grandparents _______ for 50 years. We are going to celebrate it.

• will have been married

• will be married

• will be getting married

Answer explanation

➪ We can use the future perfect to talk about the duration of a situation until a certain time in the future.

I'm cleaning the kitchen. By the time you arrive, it _______ spotless.

• will be

• will being

• will have been

Answer explanation

➪ In this case, we use the future simple, because we are talking about a something that will be true at a certain time in the future.

➪ We cannot use the verb be in continuous forms, and the future perfect does not make sense, because be spotless isn't an action that you can complete; we could say for example 'By the time you arrive, I will have finished cleaning.'