Question

求英语高手解答！

Consumer confidence, while certain to improve ( )the prices remain stable, does not determine consumer spending.
A now that B so that C such that D and that

Answer 1

D
主句是Consumer confidence does not determine consumer spending。
中间的while certain to improve ( and that)the prices remain stable是插入语。这个插入语是由两个并列关系句子组成：前一分句是consumer confidence is certain to improve的省略；后一分句是the prices is certain to remain stable的省略。
句意：尽管消费信心肯定会提高，商品价格也肯定会保持稳定，但消费信心并不能决定消费。

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Answer 2

A
消费者信心，虽然因为价格稳定可能上升，（但）并不决定消费开支。
now that表原因。

Answer 3

D
主句是Consumer confidence does not determine consumer spending。
so that：为的是...；以便，
now that表原因相当于since, 由于、既然，是连词链接句子做状语。