---  ___  do you like dolphins? ---Because they are very smart.

 —Mark, where do you work?            —I work in a company        sells cars.

A: __________ do you use your computer?B: I use it in the evening.

A cat, ______ it is a white one ______ a black one, is considered to be a good cat as long as it can catch mice. 

–Would you like to go to the concert with me? –I’d love to, ______ I’m afraid I have no time.