Which happened first? in your notebook write 1over the thing that happened first .and 2 over the event that happened later 1.by the time i left the building everyone had gone home 2.i looked in the garden .but they had already gone to work 3.they had cleaned everything up by the taim their parents returned 4.i had already taken three aspirins,but they didn't help 5.i wanted to have a bath. but someone had used all the hot water 6.we had made our plans carefully and won the prize

Здесь нужно сверху, над глагольными формами, указать последовательность событий с цифр 1 и 2  (1 - что случилось раньше, 2 - что произошло потом).

                         2                                          1

1. By the time I left the building everyone had gone home.  (то есть, сначала все ушли, потом я)

        2                                                      1

2. I looked in the garden, but they had already gone to work.

                  1                                                                               2

3. They had cleaned everything up by the time their parents returned.

             1                                                                 2

4. I had already taken three aspirins, but they didn't help.

           2                                                           1

5. I wanted to have a bath, but someone had used all the hot water.

             1                                                           2

6. We had made our plans carefully and won the prize.