David, how old is your father this year?—______. And we just had a special party for his _____ birthday last weekend.

.Do you spend an hour __________ badminton every day?

Yesterday I lost my pencil sharpener. I couldn’t find_______.—Oh, it’s a pity. You’d better buy ________ this afternoon.

I like the color of the sweater, but it’s ________ big.

It’s very to play Chinese chess with old friends at home.