Bats are surprisingly long-lived creatures, some ___ a life span of around 20 years. 

Agriculture officials this week said strict control pressures are in place,___to prevent the red fire ants spreading across the country.

The visiting Minister expressed his satisfaction with his talk,__________ that he had enjoyed his stay here.

____ his telephone number, she had some difficulty getting in touch with Bill.

I personally think__more listening, speaking, reading and writing is the key to__our English.