Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous.

—Must I go there right now?—No，you ________.You ________ go there before supper.

--- Could I look at your pictures?   --- Yes, of course you _____.

She can hardly write her own name, ______?

--- That T-shirt with Yao Ming’s picture on it ________ belong to David. He admires him a lot.  ---No, it ________ be his. He hates black color.