have been possessing 和 have been having 哪个更合适?

have been possessing 和 have been having 哪个更合适? have been have been have been have been Children with parents whose guidance is firm,consistent,and rational are inclined ______ high levels of self-confidence.a.possess b.have possessed c.to possess d.possessing have been还是have been being? have since been 和 have been since have been 和have ever been区别! have broken have been broken? I have been there,have been 是have been in还是have been to的缩写? Have been waiting for have+been是什么时态 have never been是什么意思 have been 的用法? Where have they been? could have been Have you been to?