——Mom,what did your doctor say?—— He advised me to live _____ the air is fresher.in where B. in which C. the place where D. where
The single most important factor ____ contributes to success is _____ you do every single day.
You may drop in or just give me a call. __________ will do.
Both sides have accused __________ of breaking the contract.
Of all the books on the desk, __________ is of any use for our study.
I hear __________ boys in your school like playing football in their spare time, though others prefer basketball.