组织雅克萨自卫反击战捍卫我国领土和主权完整的清朝皇帝是（）

A.康熙帝

B.雍正帝

C.乾隆帝

D.顺治帝

Yesterday was the twins’ birthday, ________  presented a gift.

A . each of them    B each of whom  C  both of them  D  both of whom