文中共有10处语言错误，每句中最多两处。错误涉及一个单词的增加、删除或修改。
增加：在此处加一个漏词符号（∧），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. 每处错误及修改均仅限一词；
2. 只允许修改10处，多者（从11处起）不计分。
Dear Grandpa,
How are you those days? I have been missing you very much after I went to college a year ago. Whenever I think of the old days, I feel very happily. I still remember when I was child, you always held me in your arms and told me stories till I fall asleep. We often went to the fields to enjoy the pleasant view there. You told me the name of different plants and their      characteristics. Gradually, I became interesting in biology and chose to learn biology when I entered into the college. Now my friend Ann, together with me, are going to do field study       and the findings will be use as materials for our research. Since we’ll do the study in our hometown, I hope to see you by then.
Yours,
Daisy