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— How was your weekend, Bella?
　　　　— Awful! That was the first time I _____ alone at home, bored to death.
A．has leftB．had left
C．has been leftD．had been left
D
考查時態(tài)。It/That was the first/second… time that某人第幾次……，從句用過去完成時，選D。
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