-Do you know the boy________ is sitting next to Peter?-Yes. He is Peter's friend. They are celebrating his ________ birthday.
31.-----She missed her train to London,____she didn"t seem to care. ---- Well, there is anotherl one in 15 minutes.
30.Mr.Snuth advised us to________a written agreement even it was just a small deal.
29.There are also instructions about the________of all the buttons and switches.
28.The university with two____campuses hasa student population of 50,000 in total.
27.Let' s move all the products into the hall and_____them in a proper order.