most of the children in my time liked to play together under that big tree. during the sum

问题补充：

most of the children in my time liked to play together under that big tree. during the summer holidays

A. although

B. exactly

C. especially

D. probably

答案：

A. although

B. exactly

(答案→)C. especially

D. probably

解析：句意：在我年轻时大部分的孩子喜欢聚集在那棵大树下玩，尤其是在暑假。A虽然B确实C尤其是D可能。根据句意，故选C。