He_______tostudyharderinthefuturesothathecouldhavemoreopportunitiestofindabetterjob.
A、resolvedInordertoincreaseouroutput,weneedtoimportmoreproduction_______.
Thisriverformsanatural_______betweenChinaandKorea.
Ihavenotheardanythingfromhimsincehis_______.
Sometimesitisverydifficultto_______someoftheEnglishwords.Eventhenativespeakercannothelp.
Asateacher,youshouldnot_______thestudentsfromaskingquestionsinclass.