阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
Simon: Linda, do you know when the visitors from China are coming?
Linda: We offer them three  (choose): the end of March, the middle of April and the beginning of May, and they chose the earliest  ,which is good actually with exams    (come)up in May.
Simon: Right. And how many are coming? Did you say about 8?
Linda: Yes, they said 8 at first, but  ( change) to 6 this morning.
Simon: Good, we have 5 weeks to prepare. Here are my suggestions. On the first day, a welcome party, then they can visit  schools in the district on the second and third days.
Linda: We’ve got to remember this group wants to look at how the Internet is being   (use)in the classroom. That’s    they are coming for.
Simon: Exactly,  I want to ask Mr. Tod to give them a talk on this on the afternoon of the third day.
Linda: That will fit in very  (nice).
Simon: And on the last day, they would do some sightseeing. We could take them on the tour of London, but many of them  have been there already, and Scotland will be too far away.
Linda: Why not take them for a walk along the coast? It should be interesting.
Simon: Good idea! Linda. I’m sure they’ll like it.