I thought he would offer to pick me up. _______, he even refused me when I asked him to do so.

Remember to do this in time of H1N1 ---         constantly the windows to let fresh air enter and move around inside, and avoiding the access to the crowds, a necessity everyday. 

These animals are all used to their environment,______, they have learned how to live successfully in their habitat．

The expert offered us another piece of advice , ___ of great help to our program. 

-- How do you like the movie? -- ______, it’s not exciting enough, though lots of money has been spent on it.