He ____ in our school for 20 years and he ____ here in 1977. [ ]
A. has taught; came
B. has taught; has come
C. taught; came
D. has taught ; has came
答案:A
He ____ in our school for 20 years and he ____ here in 1977. [ ]
A. has taught; came
B. has taught; has come
C. taught; came
D. has taught ; has came
答案:A