1. Construct a sentence from the words given: When/ they/ arrive/ shop/ buy/ fridge/ they/ know/ all/ fridges/ sell.
A. When they arrived at the shop to buy a fridge, they knew that all fridges had been sold.
B. When they arrived at the shop to buy a fridge, they knew that all fridges have been sold.
C. When they arrive at the shop to buy a fridge, they know that all fridges had been sold.
D. When they arrived at the shop to buy a fridge, they knew that all fridges had sold.