Police are ________ the disappearance of two children.
A、lookingupC
A(在书中)查找B仔细查阅，审查，(对某人)视而不见C调查，研究，查问D.观看，旁观，看待
Heinsuredhiscar________hehadanaccident.
Onecanfigureoutthemeaningof“airmail”tobe“mailbyair”byits______.
Ithasbeenyears________Ireturnedhome.
Perseveranceisakindofqualityandthatis_______ittakestodoanythingwell.
Ifyoutrytolearntoomanythingsatatime,youmayget________.
