The celebration gathering ____ the anniversary of Macao’s return to the motherland were held here on Sunday.[ ]

I know that _____would over discourage him; he would never give up to be a director　

The factory was built in a secret place, around ______ high mountains.

In the good care of the nurses , the boy is recovreing from his heart operation

When we arrived in the middle of the night，there was no food as all the shops were shut.