1．As we know，they d________with you on this subject.
2．He is，to be e________，sixteen years old，and is not old enough to join the army.
3．The essay was written by me recently；please make c________.
4．I would like to smoke，if you have no o________.
5．We want to sign a written________ (商业的) contract with your company.
【答案】1.differ 2.exact 3.corrections 4.objection 5.commercial
