Al2O3→Al3(SO4)3→Al(OH)3→Al2O3

Which is right? Complete the sentences

1. At the moment the delegation.....................................................( arrives/  is arriving/ will arrive) at the station.

2. The delegation....................................just..............................................(arrives/ arrived/ has arrived) at the station.

3. The delegation ............................................(arrives/arrived/ has arrived) at the station this morning.

4. The dealegation.............................. already .................................(arrives/arrived/ has arrived) at the station.

5. The delegation ................................................ (arrives/arrived/ has arrived) at the station two hours ago. 

6. I ....................................(stay/ am staying/ stayed) at the Sputnik Hotel. I' ll be happy to see you tonight. 

7. When I visit  Moscow I usually................................(stay/ am staying/ stayed) at the Sputnik Hotel.

8. I think next time he ............................. (stays/ is staying/ will stay) at the Sputnik Hotel.

9. I was in Moscow two years ago. I (stay/ stayed/ have stayed) at the Sputnik Hotel.

10. I ....................................never.............................(am staying/ stayed/ have stayed) at the Sputnik Hotel. Is it a good hotel?

Срочно!!!!!!!!!!!!

Ку. Мне нужно сочинение на тему "Украина и поэма Байрона"

 They go to school at the 7 o clock everi day(when)-задайте вопрос к предложению.      He will travel to london with his friends(with whom)- задайте вопрос к предложению.