2. Our plane landed. We waited an hour for our luggage.
A. We had waited an hour for our luggage after our plane landed.
B. Before our plane landed, we had waited an hour for our luggage.
C. After our plane had landed, we waited an hour for our luggage.
D. We waited an hour for our luggage, after that, out plane landed.
3. It is a long time since we last met.
A. We haven't met for a long time.
B. The last time we saw was a long time.
C. We didn't meet for a long time.
D. This is the first time we have met.
4. My father had watered all the plants in the garden by the time my mother came home.
A. After my father watered all the plants in the garden, my mother had come home.
B. My mother came home after my father watered all the plants in the garden.
C. Before my mother came home, my father had watered all the plants in the garden.
D. My mother had come home before my father watered all the plants in the garden.