我的数学考试得了C，比上次进步了一点。

I got a ___C on my math test, which is slightly better than last time.

在英语字母表中，C是第三个字母。

In the English alphabet, ___C is the third letter.

请唱一个高音C。

Please sing a high ___C.

这座城堡建于14世纪。

This castle was built in the 14th ___century.

这张专辑的所有歌曲都标有版权符号。

All songs on this album are marked with the ___c symbol.