题目内容

Only under special circumtances ______ to surf online.

A. are freshmen permitted
B. freshmen are permitted
C. permitted are freshmen
D. are permitted freshmen

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Only bu speaking with the microphone ______.

A. was he able to make himself hear
B. he was able to make himself hear
C. he was able to make himself heard
D. was he able to make himslef heard

______ when she started weeping.

A. Not until he arrived
B. Hardly had he arrived
C. No sooner had he arrived
D. Scarcely did he arrive

Only when one loses freedom ______ its value.

A. does one know
B. one does know
C. will one know
D. one knows

______ their support, we'd be in a very difficult position.

A. It were not for
B. Were it not for
C. Not for
D. If it were for

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