While he in Europe, he some photographs of many universities.
A. traveled ;took
Btraveled ;had
C. was traveling ;put
D. was traveling ;took
网友回答
A. traveled ;took
B. traveled ;had
C. was traveling ;put
(答案→)D. was traveling ;took
解析： while作为“当…时候”讲时常跟延续性动词的进行时，“拍照片”用take. 在欧洲旅行期间他拍了好多照片。 选D