问题
选择题
Mary didn’t understand made her deskmate so upset all the morning.
A．it was that
B．why it was that
C．how that was
D．what it was that
答案
答案：D
本题考查强调句型。该题为特殊疑问句整体做understand的宾语，因此应该使用正常语序。由于made her deskmate so upset缺少主语，因此我们可以断定“被强调部分”是做主语的，因此应该使用疑问代词what。