It was April 29, 2011_____ Prime William and Kate Middleton walked into the palace hall of the wedding ceremony.
A. that B. when C. since D. before
The Nile River ____ flood large areas but now the water ____ produce electricity.
A. used to; is used to B. used to; used to
C. was used to; is used to D. was used to; used to
So difficult ____that no one could ___ a good solution to it.
A. was the problem; come up with
B. the problem was; come up with
C. the problem was; put up with
D. was the problem; put up with
When we arrived, she went straight to ___ kitchen and started to prepare ___ meal for us.
A. the; a B. /; a C. the; / D. a; the
校学生会将举办义卖活动以资助贫困地区的儿童上学。请你写一份通知，内容包括：
•介绍活动的目的；
•号召大家踊跃捐献不用的物品，并参加义卖活动；
•义卖时间、地点：周六上午9点，校阶梯教室。
注意：1. 词数100左右
2. 可适当增加细节，以使行文连贯；
3. 参考词汇：义卖charity sale；阶梯教室lecture hall。
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假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。每处错误涉及一个单词的增加、删除或修改。
增加: 在缺词处加一个漏字符号（∧）, 并在其下写出该加的词。
删除: 把多余的词用斜线（\）划掉。
修改: 在错的词下划一横线, 并在该词下面写出修改后的词。
注意: 1.每处错误及其修改均仅限一词;
2.只允许修改10处, 多者(从第11处起)不计分。
There are different train ticket for people to choose from when traveled by train. They may want to buy a single ticket and a return ticket. A single ticket allows us to enjoy more freedom at their destinations while a return not only is cheaper but also saves them trouble of buying the ticket when they have decided to return. Some people prefer hard seats to soft ones. Young people like to have hard seats because enjoying the company of other passengers is exactly when they need during a journey. Businessmen would not like to have soft seats. They wanted to have a good rest. When they get on the train，they are still energetic and can rapid go on to do their jobs.
