Mr .Zhang has been a teacher _________ twenty years.A for B.

Mr .Zhang has been a teacher _________ twenty years.A for B. mr johnson has been a teacher for twenty years保持基本句意不变mr joh Mr Li has been a m___ of the Party for twenty years 英语:My father has been a teacher for ___(near) twenty years. i have been a teacher for twenty years. I have been a teacher for twenty years 对for twenty years提问 2.He a teacher for three years.A.has be B.has been C.will be Ben ______ a teacher for 4 years .A.has been B.has become C. He__a teacher for nearly five years.a.has been b.has become My aunt has been a teacher ____ten years ago.A.for B.since C Mr king has ____China for over 3 years.A gone to B been to C he has been a teacher for ten years he has ___ ____a teacher