The boy complained _______ a pain in his stomach.
A、withD
complainof：抱怨，说自己有病。句意：这孩子说他肚子痛。
Studentsshould_____theirowninterestsaswellasdotheirschoolwork.
Nosoonerhadwereachedhome________aviolentstormbrokeout.
Aftermonthsofvoyage,Columbusarrivedin______laterprovedtobeanewcontinent.
Theprofessoraskedaquestion,andDavid________agoodanswer.
Itisdifficultto________theimplicationbetweenthelines.
