It shames me to say it but I told a lie when at the meeting by my boss.A. questioningB.

问题补充：

It shames me to say it, but I told a lie when at the meeting by my boss.

A. questioning

B. having questioned

C. questioned

D. to be questioned

答案：

A. questioning

B. having questioned

C. questioned

D. to be questioned

解析：本句when后面省略了I was