问题

eryone is concerned about how toconquer the economic crisis, __________is very important for us to preserve ourstandard of living

A:their
B:whose
C:which
D:that

正确答案是：

同类题型

metown,_______ I spent my happychildhood, has changed a lot.

Had he spent more time practicing speaking English before, he _______ able to speak it much better now.

My teacher is ______ what I did yesterday morning.

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