1,will be having

2,will you be doing 

3,will be studying 

4,won't be waiting 

5,will be walking 

6,Will Dereck be playing 

7,won't be doing 

8,Will we be visiting 

#good_luck 

a, They will be having (have) dinner at seven. It's best to call later 
b, What will you be doing(you/ do) at this time in five years ?
c. He will be studying(study) at the library this afternoon , so he will not see Jennifer when she arrives
d, Jane won't be staying(not wait) for us at the station this time. She's ill.
e, At the same time tomorrow we will be talking (walk ) through the streets of London
f, Will decreck be playing (dereck/play) tennis at seven tomorrow ?
g, Fortunately, I won't be doing (not do) my homework tonight so I'll able to watch the match 
h,Will(we/visit)we be visiting the hydropower plant this time next week?