阅读下列各小题，根据括号内的汉语提示，用句末括号内的英语单词完成句子，并将答案写在答题卡上的相应题号后。

小题1:They worked day and night about three days         （一切才恢复）to normal.(return)

小题2:I can’t imagine         （他们多么激动）when they received these Christmas presents.(how)

小题3:      （如果参加）eco-travel and you will find it will help you understand the importance of nature.(take)

小题4:Not       （知道如何解决）the problem, he turned to his teacher for help. (work)

小题5:The doctor insisted that the patient       （动手术）as soon as possible. (operate)

小题6:With           （一场致命的台风爆发）, more than 600 people were listed as either dead or missing on August the 21^st, 2009 in Taiwan. (break)

小题7:To every one of us,         （被录取）Beijing University is a great honor. (admit)

小题8:The news spread quickly through the village         （战争已结束）,making the villagers wild with joy. (end)

小题9:I’ll pay you a visit tomorrow afternoon if           （你方便）. (convenient)

小题10:I would have come for the lecture given by professor Lee the day before yesterday, but I  （没受到邀请）(invite).