Eating a __________ diet helps us to keep a __________ of cool and hot.
I don’t know whether you happen ____ that he has been away for two months.
The two sportsmen congratulated each other ____ winning the match by shaking hands.
It ____ we had stayed together for a couple of weeks_____ I found we had a lot in common.
---I think sometimes watching TV will cause visual pollution to the teenagers. ---_________.
You had better ____ some money for your daughter.