The subject has fascinated me since I first had the ______ of being led into it as a postgraduate student of Professor J. C. Smith in the mid 1960s.

A．floated
B．formed
C．expressed
D．mouthed

A. You should have a system for monitoring people’s work performance.
B. Wherever the beer is kept, the temperature must be carefully controlled.
C. Just when his ship was coming in she might have set fire to it.
D. He can swim to the other side of the bank within five minutes.