More and more people prefer jogging in the morning, _______ benefits for health arise from the air rich in oxygen.
A.which B.that C.whose D.who
There are lots of places of interest _____ in our city.
A.needs repairing B.needing repaired C.needed repairing D.needing to be repaired
The book was written in 1946, ____ the education system has witnessed great changes.
A.when B.during which C.since then D.since when
I have never been to London, but it is the place ________.
A.where I would like to visit B.I most want to visit
C.in which I want to visit D.that I want to visit it most
The church tower which will be open to tourists soon. The work is almost finished.
A.has restored B.has been restored
C.is restoring D.is being restored
We are confident that the environment ________ by our further efforts to reduce production.
A.had improved B.is improved C.will be improved D.improved
