Mike spent time with ____native people to gain ____better understanding of the country

With some technical problems to be solved, it may be a while _____the system is put into use[ ]

He kept smiling secretly and we were all wonderingthat made him so happy

The present situation is very complex, so I think it will take me some time to ______ its reality.

How I wish every family _________ a largehouse with a beautiful garden!