AtanyrateIdidnotsucceed_______myselfunderstoodbyyou.
D
succeed in doing sth: 成功做某事。
Wateriscomposed_______hydrogenandoxygen.
Theprofessoraskedaquestion,andDavid________agoodanswer.
Hewouldhavegivenyoumorehelp,ifhe________sobusy.
Theboycomplained_______apaininhisstomach.
Itrainedhardyesterday,______preventedmefromgoingtothepark.