Mr. Jack __China for several years. A. has been

He has been （ ） for several years jack has been dead for three years He__China for several years.A has been to B has come to C ha The old man ___ in bed for several years.A:was B:has been C: She has been in China for several years.She() be a big girl mr johnson has been a teacher for twenty years保持基本句意不变mr joh Mr .Zhang has been a teacher _________ twenty years.A for B. For several years, scientists have been testing a substance In a sense,I have been dead for several years. Mr Li has been a m___ of the Party for twenty years Mr king has ____China for over 3 years.A gone to B been to C She has kept()English for several years A.practising saying