.---David. I’ve lost my keys again. ---Here not again！You your keys.A. always lostB. alwa

问题补充：

.

---David. I’ve lost my keys again.

---Here, not again！You your keys.

A. always lost

B. always lose

C. are always losing

D. had been losing

答案：

A. always lost

B. always lose

C. are always losing

(答案→)D. had been losing

解析：考查情景交际。“大卫，我又忘带钥匙了。”“在这儿呢，不是忘记！你是把钥匙丢了。”根据句意可知，应该用完成时，只有D项是完成时时。故选D。