Could you help me find some information on the net?–I’m occupied now _______, I’ll do it later

The young man from Luo Yang Called Liu Yongying is really a kind — hearted guy , who is ready to help others .— A good fellow（小伙子）_____

Have a good rest ; you need to___________your energy for the football match this afternoon . —Thanks a lot .

Everybody is going to climb the mountain . Can I go too , mom — ______ Wait till you are old enough ,dear.

Mary, please pass ______ the ruler.