28Which sentence is wrong29

If you don’t work _____ enough, I don’t think your dream will come_____.

Dr Yuan Longping grows _____ is called super hybrid rice, _____ has a high output.

Rubbish in space has caused collisions, which would ______ produce more rubbish that threatens astronauts and satellites.

大家都知道，如果路边的小屋上写有W.C.的字样，那大概就是一个可以方便的地方。请问W.C.的完整英语形式是什么