A:Mum, how can I make the cake more deliciousB:Add some eggs and mix them_______milk.

I don’t think it’s good to play computergames on school nights. You should _______ it.

Would you be kind enough to help the boy _____ Chinese is really hard to learn?

The factory________ we visited yesterday was the one _______ I once worked.

Where is the camera ______ my father bought in Japan –Oh， let me see. I put it in your suitcase.