1．The ____________(符号)on the packet is a guarantee that the food has been produced organically.
2．Tickets may be ____________(购买)in advance from the box office.
3．If you send the application form in straight away，I can _________(保证)you an interview.
4．Younger workers tend to be at an _________(优势)when applying for jobs.
5．Peter is one of the famous software ____________(设计师)in the company.
