单项选择题

（）his advice, I couldn't have completed the project
successfully

A. As if 
B. Should  
C. But for   
D. Had

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（）health insurance, it will be much too expensive to have the surgery

A. Unless
B. Without<b
C. As if
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单项选择题
It （）so cloudy and humid, you ought to carry an umbrella with you

A. being   
B. to be
C. as being  
D. having been
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