____ visited the Shanghai World Expo is sure to tell you the place is worthy ____ twice． — You can say that again．

Why are you always standing in class, Kitty—I can’t see the blackboard clearly because the twotall boys are sittingme.

They climbed to the top of the tower, _____ they could see _____ was happening in the distance

依次填入下列各横线处的成语，最恰当的一组是( )①消防工作必须立足于 ，从提高公众的防火意识做起。②即使现有的产品畅销,也要 ，抓紧技术储备与新产品开发。③如果我们不从小事做起, ，那些细小的苗头最终可能酿成大祸。

Judy is a good student. She’s the first to come to school. She comes to school late.