—I wonder what makes you a successful manager.—I ________ as a waiter for five years，which contributes a lot to my today’s work.

The information that    will become your ability once you use it．

 It is said that the student 　　　　 seriously ill for two months last semester. 

 __________ to sun, rain and wind for a long time, the stone split（裂开）.

You will have to wait for one more week, when the manager _____ back from his trip.