The big wind blew the small boat _________.

We have to stop such a thing ________ happening again.

I hope to go and visit Hong Kong _______ a few years.

The street is ten kilometres ________ and twenty metres ________.

What has happened _________ the ear?

Would you please say something about the picture ________ the left?

Is the room big enough _________ fifty people?

　　　　 ________ best to plant trees in spring because ________ time for everything to grow.

Can you make him a cup of tea neither too hot _______ too cool?

Mary always comes to school ________ her beat clothes.