Boys, don’t lose____ in playing Angry Birds. It is bad for your eyes to play computer games for a long time.

Zhong Nanshan, the famous medical scientist, has devoted most of his life useful ways in treating cough diseases.[ ]

Hi, guys. Where are you heading now?—Home. We _________all our money, so we have to walk home now.

is the weather in Beijing now? ——It’s ____________.

If__ ___ calls, tell_______ I’ll come back soon.