You cannot be ____ careful when you drive a car.

--Students should devote most of their time to studying rather than playing computer games.  ---________. No pains, no gains.

-We need an immediate reply. –I see . I’ll send the paper to you_____.

He looked ________ at the news that his favorite team had lost the game and felt ________ that Martin should have taken part in it.

 We had our bad times but on the whole we are ____ happy with our life.