On this happy occasion, I'd like to say that we are _____ much obliged to you for your kind cooperation.A.even soB.ever soC.as yetD.so far
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B解析ever so (=very) 非常; It's ever so cold.与名词搭配时则用ever such, 如：She's ever such a nice girl. (她是一位非常好的姑娘。) even so (=although that is true, nevertheless; still) 即使如此：The fire was out, but even so, the smell of smoke was strong. (=The fire was out, but the smell was still there.)