Few young people in China know about Lady Gaga , _______—_______, she is quite famous here in China.

It is uncertain________side effect themedicine will bring about，although about two thousand patients have taken it.

找出画线部分的读音与其他三个不同的选项。

Who______ it be that is knocking at the door —It ______ be Father, but I’m not sure.

Could you please tell me _____________－Sure.