问题

It is being diccussed whether it is worthwhile ______ temples like this at such high costs.

A:preventing
B:to prevent
C:preserving
D:to preserve

正确答案是：

同类题型

We couldn’t wait _______ a good rest afterthe exam.

He was so pleased with all ______ we had done for him _____ he wrote us a letter to praise us for it.

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While he wthe ;a