Mr White _______his racing bicycle by himself yesterday, but I’m not sure whether it is ready

I like to have my photos taken_______ there are mountains and rivers.

He is perfectly __________ to live in the mountains and paint pictures all day, even though he is of poor health.

____________ jumped into the freezing river to rescuethe drowning girl deserved to be praised.

The role that our army_____ in flood control is very important.