问题
选择题
While he in Europe, he some photographs of many universities.
A．traveled ;took
B． traveled ;had
C．was traveling ;put
D．was traveling ;took
答案
答案：D
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