The smile on his face makes him _______ really ______.

--- Mum, I am very thirsty(口渴).--- What about          some orange juice?

 If you don’t study English all the time, you’ll have a difficult time ____ it in the future.

It’s a fine day today. Let’s _____ around the park, OK?

Mr Smith’s watch doesn’t work, so he’s going to ask someone _______it．