单项选择题

With regard to future oil supplies, the situation is uncertain.

A. Judging
B. Talking
C. Concerning
D. Thinking
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单项选择题
But ultimately he gave in.
A. in the end
B. surely
C. certainly
D. lately
单项选择题
She persevered in her ideas despite obvious objections raised by friends.
A. persisted
B. insisted
C. resisted
D. suggested
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