网址：http://m.1010jiajiao.com/timu_id_878303[举报]
________ do you open a new document?
A．How
B．What
C．Which
D．Who
--________ is your sister？
--She is secretary．
A．What B．How C．Who D．Which
__________do you think of sports shows?
A．What B．How C．Which D．Who
Where is the key______ fits this lock?
A．which B．who C．how D．what
Could you tell me ________?
A．what the food is made of B．which the food is made
C．how is the food made D．who the food is made