1.When the finally ( arrive ) .....with the food , the guest( alread leave ) .....the restaurant.

=>arrived / had already left

2.The smiths ( spend ) ....two days in Hanoi before they(travel ) .....to sa pa last week

=>was spending/ travelled

3,I went to the box office at lunchtime,but they ( already sell ) ....all the tickets.

=>were already selling

4.I felt very tired when I got home , so I ( go ) ....straight to bed.

=>Went

5.Two days ago I ( meet ) ...an old friend who I ( not see ) ....for years.

=>met/did not see

1 arrived , is alread leaving

2 am going