--How was your weekend Rose?--Awful! This was the first time I alone at home bored to d

问题补充：

--How was your weekend, Rose?

--Awful! This was the first time I alone at home, bored to death.

A. had left

B. had been left

C. have been left

D. have been leaving

答案：

A. had left

(答案→)B. had been left

C. have been left

D. have been leaving

解析：考查时态：在句型This was the first time +从句…中，从句的谓语是过去完成时，另外I和leave alone是被动关系，所以是过去分词的被动式，句意：--罗斯，周末怎样？--糟糕极了，这是我第一次被单独留在家里，烦得要死。选B。