be on的例句

1、The cast must all be on set by 7 in the morning.

2、The latest computers will be on show at the exhibition.

3、No offence, but Id really like to be on my own.

The latest software will be on parade at the exhibition.

最新电脑软件将在展览会上展出。

The public should be on the lookout for symptoms of the disease.

公众应当留心这种疾病的症状。

In today\'s lecture the focus will be on tax structures within the European Union.

今天讲课的重点是欧洲联盟内部的税制结构。