--- Hello. Can I help you?--- Hello. My name is Yang Yan. We have a ________ for the party tonight.

 There is said to be no medicine for a cure _____ lung cancer.

Interest is as________to learning as the ability to understand，even more so.

  The shopping mall is making every effort to ________ new customers in order to sell more foods.

Joining the firm as a clerk，he got rapid promotion，and ________ as a manager.