问题

The Chinese government has made theMid-autumn Festival a level holiday, _______people will have a day off. A.when B. which C.where D. since
A:might
B:Data can make our life easier and more comfortable
C:But sometimes we may find that data aren't everything
D:since
B:Data can make our life easier and more comfortable
C:But sometimes we may find that data aren't everything
D:since
正确答案是: