Please write a report _______ the above subjects are to be covered.
B
inwhichtheabovesubjectsaretobecovered是report的定语从句。which指代先行词report，in用于与report搭配。
Basically，theseattitudesamounttoabelief________leisurecanandshouldbeputtogooduse
Neverbefore_______sorapidlydevelopingasitistoday．