题目内容
| Mother giant pandas have only one or two babies . |
A. at a time B. at the time C. at this time D. at that time |
试题答案
A
相关题目
Mother giant pandas have only one or two babies .
[ ]
A. at a time
B. at the time
C. at this time
D. at that time
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B. at the time
C. at this time
D. at that time