单项选择题

Very few people could understand the lecture the professor delivered because its subject was very ______.

A. obscure
B. indefinite
C. dubious
D. intriguing
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单项选择题
If it hadn’t been for the doctor’s care, I （）speaking to you now.

A. would not be
B. would not have been
C. will not be
D. will not have been
单项选择题
She agreed to take the naughty boy along （）he behaved himself.

A. whether
B. that
C. provided
D. in case
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