我的耳机以前工作正常，现在不能用了 。

My headset worked before but now it's not working.

youdao

Doesnt work也可以选，可以看成是正确答案。实际上，这里使用一般现在时的话，表明我是要告诉售货员，这台收音机现在不能用了。

"Doesn't work" (answer d) can also be used and would be considered correct-in effect, it is present tense where I am telling the salesman that the radio doesn't work now.

youdao

其他所有的功能我还没测试，也许以前不能用的功能现在也可以用了！

All other I'm not tested, maybe we have other working previously not working!

youdao

其他所有的功能我还没测试，也许以前不能用的功能现在也可以用了！

All other I'm not tested, maybe we have other working previously not working!

youdao