Motivationandpersonalitymay________thevaryingdegreesofsuccessinone’scareer.
A
A . 说明，解释，是……的原因 ; B 请求，申请 ; C 冒风险，担风险 ; D 供应(给)，提供(给)
Thepolicemancameuptothelonelyhousewiththedoor_______,_______thereforawhileandthenenteredit.
Chinaisamountainouscountry.Hills,mountains,andplateauscover_______ofthetotalarea.
Heshookhandswiththevisitors________astoconveyhisapology.
PoorspeakerofEnglishthoughhewasatthetime,hestillmanagedtomakehimself________.