单选题Our friends were _______&

问题补充：

单选题Ourfriendswere_______busy______witheachother_______thetime.A.so; talking; that they forgotB.too; talking; to forgetC.too; to talk; to forgetD.so; to talk; that they forgot

答案：

A解析本题考查too…to；so…that…和be busy的用法。be busy doing sth忙于做某事。句意：我们的朋友忙于交谈，以致忘了时间。so…that…如此……以致于……。