翻译填空：他已经在这所学校当了20年的教员。He has been a f member at the college for 20 years.
举一反三
- 青书学堂: ( )Although he's only 16 years old,______ he has been a college student for two years.
- He _______ a league member for three years A: is B: has been C: has become D: have become
- My brother joined the League _________ March 24, 1990. He _____a League member for six years. A: on, has become B: on, has been C: in, has been D: in, has become
- My father has been a lawyer for 20 years. It is really good________ .
- There has been a lot of important (improve) _____________ here in the last 20 years.