如今我们真的对食品安全感到担忧。

　　　　2). We your safe return. 我们都盼望你平安归来。

　　　　3). She leave the room. 她渴望离开这个房间。

4). The College Entrance Exam is over. He ___ his marks, because he __ admitted to a famous college, which is his dream.

高考结束了。他很担心他的分数, 因为他渴望被一所著名大学录取, 这是他的梦想。

3. pain n. 疼痛 pains (pl.) 努力,辛苦

take pains to do sth. 尽力/费心(做某事)

　spare no pains to do sth. 全力以赴做某事

例句：1). No pains, no gains. (谚)不劳无获。

2). They spared no pains to search for the quake victims, but ended in vain.

他们全力以赴地寻找地震受难者, 却无功而返。

3). The singer has taken great pains to improve his image after the use of drugs.

吸毒事件之后,那位歌手煞费苦心地改善自己的形象。

练习：1). She _______ with her English and got high marks.

她刻苦学习英语, 获得了高分。

2). We will ____ you.

我们将全力以赴支持你们。

3). She cried out ______ when her tooth was pulled out.

A. in pain　　 B. in surprise　　 C. in brief　　 D. in order

4. be crazy about 迷恋, 热衷于, 醉心于