—What do you think of John?—He’s a good boy, but he ______ be really stubborn at times.

Keep up a good state of mind even if you ______ fail plenty of times.

The man ______ be my father. My father is much taller.

—________I do the laundry first, Mum?—No, you ________. You can do your homework first.

 —________ I swim here?—I’m sorry. Children _______ swim alone here.