问题
选择题
To improne the pmlity of our products we uaked for nuggratior a had used the producu.
A.whacver
B.who
C.whichever
D.which
答案
答案:A
考查关系代词。这儿_______ used the products。是个宾语从句,从句中缺少主语,并且指人,所以用whoever.选A。