ay find the key to the math problem on page 107．—Ah, it’s so simple. I wonder why I _____ of that．

Playing balls together is a kind of activity_____ every playerneeds to be well-cooperated together

Armstrong became interested in _______ ever since he took his first _______ at the age of six.

We will be shown around the city: schools, museums, and some other places, _______ other visitors seldom go.

Do fish sleep I think they’re swimming around .-Of course they sleep. But they sleep with their eyes open.