We built this factory ______ top speed and minimum(最少的) cost.
--- ______,Danny? --- I don’t feel very well. I’ve got a pain here.
You can ride ____ bike. My aunt’s bike is here. I can use_____.
Our teacher often tell us ____ in the river. It’s dangerous.
---____ interesting the story is! ---Yes, I have read it twice.
I’m good at playing___ football, but Jenny is good at playing___ guitar(吉他).