问题
单项选择题
It was some time before he ______ after being knocked out.
A．came to
B．came back
C．came over
D．came across
答案
参考答案：A
解析：come to“恢复知觉；苏醒”，与come round同义；come back“回来”；come over“过来”；come across“遇到”。
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