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处语法错误，每句中最多有两处错误。每处错误仅设计一个单词的增加，删除或修改。
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词。
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。
Dear Lucy,
    I am very excited to learn that you're coming to Xi'an for travel. Both my parent miss you a lot. So is our friend, Ruby. April is best time of the year to visit Xi'an. There is only a few rain and the weather is neither too hot or too cold. There are so many places I wanted to take you to after I finish my work like a volunteer in the local charity. When you come, you can stay with ourselves. My house is about three kilometers far away from Xi'an Moslem Street where is full of local foods.
Best regards,
                                                                                                                                                Janet

语法填空

    Many teachers believe that hands－on experience is the ____(good) way to learn. A group of students in the United States are putting that belief to the test. They ____ (success) designed and built a robot for discovering unexplored mines ____ the bottom of the sea. Students made the robot ____(answer) a challenge from the U．S. Department of Defense.

    The students recently tested the underwater vehicle ____(call) PerseusⅡin a 95－meter－long tank of water at the Stevens Institute of Technology.

    The robot costs about $15,000 to build. The students use a video game control to direct ____(it) movements in the tank. What's more, devices known as Japters ____ (able) the robot to go up, down and toward its target in the water. Video cameras on the robot send images back to a computer through a 13－meter－long cable. Perseus Ⅱ,____the students worked up to 20 hours a week to design and build, also has ____ set of lasers (激光), which are used to measure the size of an object.

    DeLorme supervised the project from ____(begin) to end. He says the specialized requirements of robots were demanding.

胡夫金字塔四个底边误差不超过20厘米，精确度达到千分之一以内。它反映了古埃及的伟大成就是

判断对错

0乘5等于5．

“起来！……把我们的血肉筑成新的长城！……冒着敌人的炮火，……前进！进！”每当学校星期一升旗，唱起这首催人奋进的歌曲时，我们都会联想到一位著名的音乐家。他是（    ）