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It was five o’clock in the afternoon _____ they climbed up to the top of the mountain.

It was five o’clock in the afternoon _____ they climbed up to the top of the mountain.

A. since 　 B. when　 C. That 　 D. until

It was five o’clock in the afternoon _____ they climbed up to the top of the mountain.

　 A. since 　 B. when

　 C. That 　 D. until

It was five o’clock in the afternoon _____ they climbed up to the top of the mountain.

　 A. since 　 B. when　 C. That 　 D. until

It was five o’clock in the afternoon_____ they climbed up to the top of the mountain.

　　A. since B. when C. that D. until