Althoughthetrfficisnotbusy,helikestodriveata_______speed.
A、spareItisnot---_______formetoreturnallthebookstothelibrarynowbecauseIstillneedsomeofthemformyresearch.
Sheisalready16yearsold.Butshe_______asifshewerestillalittlegirl.
He_______tostudyharderinthefuturesothathecouldhavemoreopportunitiestofindabetterjob.
Weare_______attherapidprogressMarkhasmadeinthissemester.
Thisriverformsanatural_______betweenChinaandKorea.
