Koalas sleep __.[ ]

You ought to have given them some advice.–________, but who cared what I said?

Wouldn’t it be ____ wonderful world if all nations lived in ____ peace with one another?

Have you been to the Sunflower Garden _______ lies in Nansha? －Yes. The sunflowers there are very beautiful.

Peter was so excited _____he received an invitation from his friend to visit Wuxi.