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
They reached the top of the mountain__________ they could see the highway wandering before them.
A. which B．why
C. whose D. where
