—A talk on American culture in the school hall yesterday afternoon.—It’s a pity. I missed it.
I have lost your favorite toy car. I feel really sorry ______ it.
Hello, kids! Open your books and tum to Page ______ . Let's look at ______ picture.
—Come on, Jackl Join us in the exciting game! —Could you tell me ______ it is about?
I'm going to a party. Could you tell me whether my hat ______ the brown coat?
—Please don't step on the grassland. Can't you see the sign "______ the grassland" ? —Sorry, sir! I didn't see it.