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。
Many people say that e－mail is just a faster way to deliver letters.The fact is that letter－writing and e－mail are completely different 1.(process)．Letters travel_2._envelopes through actual space and take time getting from one place to another.If I am writing on paper to my brother in Kenya，I will be less likely to complain about the breakfast I3.(have)this morning.I will probably write about my relationships and some things that I've been thinking about.I will also take more care with my style，trying to write in_4._way which is interesting and worth_5._(read)．My brother might save my letter；he might read it back to me years from now.
E－mail is different.It is instant，traveling from point to point._ 6.you don't print it out，the message doesn't physically exist.With e－mail，geography is no obstacle and time is not important.I can send a message to Kenya whenever I want to，and7._gets there almost in a second.The ease of this kind of writing and sending probably makes_8.a different kind of communication.That is9.I am not so focused on style.I might be less likely to say something10.(deep)．My brother might glance at my mail，have a laugh，and then delete it.
The volunteers will visit the primary school next Monday ,_______all the students are children of migrant workers,
A. which B. who
C. when D. where
______ is recorded in the history book, Diaoyu Island has belonged to China since ancient times.
A. As B. That
C. It D. What
I often go to the market with my friends______ I can buy whatever I want.
A. that B. where
C. whom D. which
Yesterday my aunt sent me an email _______she told me she would come to see me next week.
A. which B. where
C. that D. when
The virtues of thrift（节俭）and hard work is vital for everyone, __________is often the case in any society.
A、as B、that
C、when D、where
