----What are you ________? ---My new book . Please help me find them.
—Excuse me, can you tell me _____?—Sorry, I don’t know. You can go to the information desk.
—Would you mind my opening the window?— ________.
— What are you looking for? —I’m looking for the book _____ you lent me yesterday。
You should try to _____ the problems by yourself. You are not a child any longer.
— Do you have any difficulty _____ English?— Yes, but I try to make myself _____.