问题
单项选择题
—Has Lily come ().
—Yes, she has been here for over ten minutes ().
A．yet; already
B．already; yet
C．yet; yet
D．already; already
答案
参考答案：A
解析：
yet和already都表示已经、还的意思，yet用于否定句和疑问句，already用于肯定句。故选A。
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