Thedog()therabbitbutcouldnotcatchit. A: ceased B: chained C: checked D: chased

Thedog'scollarwasso（）thatitcameoffoverhishead. A: loose B: slight C: broad D: excessive

Thedog,iftrained____,willbemadeagoodwatch-dogoneday． A: properly B: hopefully C: personally D: usually

Thedog,iftrained_____,willbemadeagoodwatch-dogoneday. A: hopefully B: personally C: usually D: properly