heard of|have heard of

在那位作家成名之前，我从未听说过他。

I had never ___heard ___of that author before he became famous.

大多数游客从未听说过这座偏远的岛屿。

Most tourists have never ___heard ___of this remote island.

你听说过这个新的流媒体服务吗？

___Have you ___heard ___of this new streaming service?