—Li Na is the first Asian who won championship in French Tennis Open. --Yes, we ___________ her.

—Where is Tom? We can’t find him anywhere. —Perhaps he_____ home.

 –There will be more plants and animals. --I _______.We can’t live without them.

Lei Feng always _____ others first. 

 --- Are you worried when your son often plays computer games? --- Yes. I think playing too many computer games ______ on teenagers.