__________for a long time，the fields are all dried up． -考呗网题库移动版

单选题 __________for a long time，the fields are all dried up．

A．There has been no rain
B．Having no rain
C．There having been no rain
D．There being no rain

参考答案C

解析: C。由于长时间不下雨，田地都干旱了。
考查独立主格。该句前半部分是There be的完成式独立结构，与时间状语for a long time相吻合，故选C。

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单选题 The millions of calculations involved，__________by hand，would have lost all practical value by the time they were finished．

A．had they been done
B．they had been done
C．having been done
D．they were done

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单选题 Televisions enable US to see things happen almost at the exact moment__________．

A．which they are happening
B．they are happening
C．which they happen
D．they have happened

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单选题 Which of the following is correct?

A．Not on any account should such disasters be repeated．
B．On no account should such disasters be repeated．
C．Not on any account such disasters should be repeated．
D．On no account such disasters should be repeated．

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