几道英语的完成句子题
1.The rescuers ________ (担心)the safety of the men trapped in the fire.
2.They _______(经历了)one hardship after another.
3.It ______ (碰巧是)a fine day when I arrive in Beijing.
4._____________(为了取得更大的进步) ,he studied harder.
5.It will be the first time that he _______(在公共场合发言).