English has been very popular because it is the _______ language in many western countries.

—What’s Jack up to in the shoe shop? He’s there for ages.—It’s ______ that he hasn’t decided which pair to buy.

Recent efforts towards the greening of our cities have achieved much,although the results are still  far from____.  

-- I’m very tired these days because of studying for physics.--Why not    music? It can make you    .

—You know our manager has been in hospital for days?— Yes. I wonder if he is ____ better now.