Future Simple / Future Perfect / Future Continuous

1.      He (sleep) when you come back tonight.

A will sleep    

B will be sleeping

2.      By the time I come they (go).

A will go

B will have gone

3.      – It is snowing heavily. Have you listened to the weather forecast for tomorrow?

         – I hope it (stop) snowing by tomorrow morning.

A will stop

B will be stopping

C will have stopped

4.      My sister (know) the result of her exam on economy in three days.

A will know

B will have known

C will be knowing

5.      – Let's meet at the station at 5 o'clock.

         – O.K. I (wait) for you there.

A will wait

B will be waiting

C will have waited

6.      The work of the scientist (achieve) the proper acclaim.

A will achieve

B will have achieved