. the firemen put all the fires out quite quickly.A. SadlyB. HopefullyC. UnfortunatelyD.

问题补充：

.

, the firemen put all the fires out quite quickly.

A. Sadly

B. Hopefully

C. Unfortunately

D. Thankfully

答案：

A. Sadly

B. Hopefully

C. Unfortunately

(答案→)D. Thankfully

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