13£®--- You can see Mr. Smith if there is a sign “_______ ”on the door of his shop.

¡¡¡¡--- Thanks.

¡¡A.ENTRANCE       B.BUSINESS HOURS

¡¡C.THIS SIDE UP   D.NO SMOKING

14£®Are they going to have a picnic on _______ ?

¡¡A. Children’s Day    B. Childrens’s Day

¡¡C. Childrens Day      D. Children Day

15£®Where are the students? Are they in _______ ?

¡¡A. the Room 406   B. Room 406   C. the 406 Room   D. 406 Room