These teenagers don’t know much of the world yet;that’s why they are so easily _____.

What she went through those years ________ the best in her,such as patience and will power．

Look at the old women on the square. How happily they are dancing! ——Yes. But they _____ stay at home alone or watch TV.

fast runner Su Bingtian is! He finished______ in the 100- metre race in 9．99 seconds．

I’ve taken someone else’s green sweater by mistake. — It ______ Harry’s. He always wears green.