| 例句 |
checked up onphrasepast tense of check up on to search through or intoCan you check up on the status of those files? delved (into), dug (into), examined, explored, inquired (into), investigated, looked (into), probed, researched inspected, sifted, studied, viewedbrowsed, cruised, perused, scanned, skimmed (through), surfed, thumbed (through)reinvestigated checked into |