问题
选择题
I have two dictionaries, _____ are of great use. [ ]
A. all of which
B. either of which
C. both of that
D. both of which
答案
答案：D
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I have two dictionaries, _____ are of great use. [ ]
A. all of which
B. either of which
C. both of that
D. both of which
答案：D