Do you know how to ____ ice into water?
—How many birds can you see in the trees?—I can see ______ birds.
______ junk food is unhealthy food, ______ lots of kids like eating it.
I study _____ my math test ______Tuesday afternoon.
There’s ____ in the book, so no one is interested in it.
Tom wants to be ____ engineer when he _____ up.