1. The bridge which ______ last year looks really beautiful.
A. was built B. built C. was set up D. had been built
2. Don't get off the bus until it ______.
A. stop B. will stop C. stopped D. has stopped
3. I ______ in Guang Zhou for six years by this October.
A. have lived B. was living C. will be living D. shall have lived
