I have finished a large part of the book, the rest of which___ more difficult.
On many trains and buses, there are some special seats ________ out for senior citizens.
The number of foreigners that ________ to Huaihua ________still increasing.
After school we went to the reading-room to do some reading, only to be told that it .
I set up e-mail addresses for my mum and dad ________ I could e-mail them regularly.
People just wonder ________ that makes the housing price so high.