It’s not _______ for all kinds of fishes to live without water.

---Excuse me, the shirt is a bit small for me. ----Don’t worry. I’ll change it for a __________ one.

--Must I finish my homework now, Mum?　　----No, you_____.

—Have you       that Amy’s a little quiet these days?—Yes, I wonder what has happened to her．

The policeman asked the child ________ cross the street ________ the traffic lights turned green.