A-A+
The doctor told him that he should take this m
问题详情
The doctor told him that he should take this medicine one pill at one time.
A．told
B．should take
C．one
D．one
参考答案
正确答案：D
解析：应改为a。one pill at a time意为“一次一片”，原题中的at one time是“以前、从前”的意思。
考点：
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