It was April 29,2001 ____ Prince William and Kate Middleton walked into the palace hall of the wedding ceremony.

Mum, I can’t see any point in studying hard.—Come on, dear! Years of hard work will surely in your future career.

All the books donated by the students from urban schools are said ________ to the students in the earthquake-stricken areas the other day.

It is sunny outside. Why not ________ the light and open the window

下列各句中，加横线的成语使用恰当的一项是（3分）