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

It is said in the book that Thomas Edison (1847-1931)  _____ the world leading inventor for sixty years . [ ]

A. would be

B. has been

C. had been

D. was