_______ is well known is ________ the Diaoyu Islands have been part of China since ancient times.

After two hours of hiking, we finally reached _______ Tom thought was the best place to camp.

 You may have one of these; in other words, you have ______ you choose.

Best-selling author and race car driver Han Han offered a 20 million RMB reward to _____ could prove his works were ghostwritten (代笔).

There is a high probability _________ you will find aspirin and penicillin in any medicine cupboard in the world.