to have been rich.
A. They say
B. It is said
C. He is said
D. That was said
Mathematics is difficult ______.
A. to learn
B. for learning
C. to be learned
D. of learning
My hair is so long that I must go to a barber's shop and______.
A. have to cut it
B. have it cut
C. get it to be cut
D. to cut it
The pencil ______ well.
A. writes
B. is written
C. was written
D. writing