问题
选择题
--- Yes. It is in the reading material ____ we ____ reading yesterday.
A．that; did
B．that; were
C．when; were
D．when; did
答案
答案：B
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--- Yes. It is in the reading material ____ we ____ reading yesterday.
A．that; did
B．that; were
C．when; were
D．when; did
答案：B