Thepolicemancameuptothelonelyhousewiththedoor_______,_______thereforawhileandthenenteredit.
C
with the door open 是 with 的复合结构 ,open 为形容词 , 表状态 ; stood 与 came, entered为并列关系 , 在句中作谓语。
Hefound_______difficulttostudymaths.
Thegovernmentcalledoutpolicementosuppresstheriot.
It_______fortwohoursnow
Motivationandpersonalitymay________thevaryingdegreesofsuccessinone’scareer.
______aretheprimarydestinationsfortheChineseatpresent.
