成人英语三级考试

【单选题】The doctor told him that he should take this medicine one pill at one time.
A．told
B．should take
C．one
D．one

网考网参考答案：D
网考网解析：
[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。 查看试题解析出处>>