He had a strange hairstyle and he instantly became the ________ of attention the moment he stepped into the classroom.

 —Will you read me a story，Mummy?—OK.You ________ have one if you go to bed as soon as possible.(2011·陕西)

This was ____ anyone had previously sailed alone.

 With the development of Chinese economy, many unexpected problems have ________; for example, the prices of our daily goods and housing are ________ sharply.

President Hu Jintao urged every effort ________ to rescue and treat the injured German tourists in a traffic accident in Tianjin on the morning of Oct1, 2012.