5、ntthings.A. todo,todo B. doing,doing C. todo,doing D. doing,todo12. Itremains ______ whetherthecancerwillrespondtotreatment.A. seen B. tobeseen C. seeing D. tosee13. Afterdescribingtheplannedimprovements,shewento
6、n______howmuchtheywouldcost.A. toexplain B. explaining C. tobeexplaining D. havingexplained14. Pleaseremember______theplantswhileI’maway.A. watering B. tobewatering C. towater D. beingwatering15. ______outmoreaboutuniversityco
7、urses,writetothisaddress.A. Finding B. Tofind C. Tobefinding D. Find16. AfterdrivingallnightwegottoAmy’splace,_______thatshewasaway.A. onlytodiscover B. onlydiscovering C. onlydiscovered D. onlyhavingdiscovered17. ___