你可能感兴趣的试题
have they known; get have they known; were going to get do they know; are going to get had they known; got
have they known ; get did they know ; were going to get do they know ; are going to get had they known ; got
don’t know; were didn’t know; were haven’t known; are hadn’t known; are
a long time ago for a long time since a long time after a long time
had they known have they known would they know did they know
have been known to scientists for many years have only recently been discovered are known by us will probably remain a mystery
don’t know; were hadn’t known; are haven’t known; are didn’t know ; were
don’t know, were haven’t known, are didn’t know, were hadn’t known, are
particular specific flexible adequate
did they know have they known have they got to know had they known
knowing to know having known to have known
湘公网安备 43130202000226号