单选题：The doctor insisted that Paul's mother __________ examined t

题目内容：

The doctor insisted that Paul's mother __________ examined thoroughly. A． would be
B． must be
C． be
D． should have been

参考答案：

答案解析：

U．S．presidents normally serve a(n）__________term．

U．S．presidents normally serve a(n）__________term．A．two-year B．four-year C．six-ye

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