The rice made _____ possible to produce one-third more of the crop in the same field.

 She asked if any of the passengers knew _____ about machines or at least how to drive a car. 

Of the two possibilities, ______ is more likely than that.

Mr. Lee made ______ a rule that we must come to school on time.

When you’re faced with failure，    you need is to take courage and try again．