The serious expression of the captain kept his crew .A. in the distanceB. from a distanceC

问题补充：

The serious expression of the captain kept his crew .

A. in the distance

B. from a distance

C. in a distance

D. at a distance

答案：

A. in the distance

B. from a distance

C. in a distance

(答案→)D. at a distance

解析：考查词组：keep sb at a distance使…保持一段距离，句意：船长的严肃的表情使船员和他保持一定距离。in the distance在远处，from a distance从远处，C项是错误的词组，选D。