They did everything in their power to save the building dating back to the Qing Dynasty, but their efforts were _______.
---- The exam was too difficult, wasn’t it? ---- Yes, ______ could not pass it.
I'm sure your suggestion will ______ the problem.
The bank is reported in the local newspaper ______ in broad daylight yesterday
The company has introduced new technologies from the US, thus _______ its production.
The door burst open and _______, shouting with anger.