【题目】—________ ( )
—They are balls.
A. What is this?
B. What are these?
C. What is that?
【答案】B
【解析】
略
上一篇 脱式计算下面各题。85÷17+18 (44一26)...
下一篇 —I have some _. ( )—How nice!A. toyB...
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