the drought in Southwest China millions of people had to carry water from faraway places

问题补充：

the drought in Southwest China, millions of people had to carry water from faraway places.

A. Due to

B. In case of

C. Apart from

D. In spite of

答案：

(答案→)A. Due to

B. In case of

C. Apart from

D. In spite of

解析：本题考查连词短语。due to因为，由于；in case of以防，万一；apart from除了； in spite of尽管。根据句意由于中国西南部的干旱，故选A。