________volcanoes now for many years, I am still as enthusiastic about my job as the first day I first______.
#92841
A
Studied, started
B
Have studied, started
C
Having studied, started
D
Having studied, starting
推荐题目
Most of the students enjoy_____ stamps.
#97556
A
collect
B
to collect
C
collecting
D
collected
She pretended _______ me when I passed by. 
#98790
A
not to see
B
not seeing
C
to not see
D
having not seen