______ quickly, and you will be able to catch the train.
Knowing the meaning of a word is one thing; yet using it both grammatically and communicatively properly is quite ______.
Companies are struggling to find the right ________ between supply and demand, but it is no easy task.
After staying in hospital for long, the patient was advised to go to the seaside to____ his health.
______, I think, the problems can be settled in no time.
Play, often seen as____activity for kids, is still important in_________development of teenagers.