The pregnant woman always sits in the non-smoking area of restaurants to reduce her exposure ________ smoke

The traditional view is ______ we sleep because our brain is “programmed” to make us do so.

.It wsuch a nice dinner.

Residents in Wuhan will be__________ towatch horse race every week since it is expected to be open formally in 2010

It’s generous ________ Millie to donate all her pocket money toUNICEF． ——Yes．It is really meaningful _________ us to do something for charities．