问题
选择题
He was so pleased with all _____ we had done for him _____ he wrote us a letter to praise us for it.
A．that; that
B．what; that
C．that; what
D．what; what
答案
答案：A
考查定语从句及状语从句。第一个that引导定语从句，在从句中作宾语，第二个that为so … that …引导的状语从句。故选A。