.The boy asked his parents to buy him a pair of binoculars __________ which to watch football games.
After hearing the manager's stating their future plan, Mr.Brown came back home, ____.
—This book by Tony Garrison is of great use for our course.—But I think his latest one is _______ worth reading.
—Haven’t you seen the speed limit sign? Please drive _______.—Sorry, but I have to.
The more teenagers watch actors smoking in films, the more ______ they are to take up the habit of smoking themselves.
To handle the financial crisis, the new government has to work more ______ with other nations, especially the less-affected ones.