问题
选择题
Our teacher ____ in our school for 29 years and he ____ here when he was 23 years old.
A．has taught has come
B．taught , comes
C．taught , came
D．has taught, came
答案
答案：D
考查时态。 前半句中有“for 29 years”故第一空用现在完成时，而后半句中有when 引导的时间状语，因此第二空用一般过去时came.