------Have you known each other for long?
------ Not very, ________we started to work in the ABC Motor Company.
| A．before | B．since | C．when | D．after |
Don't ________ your eyes by reading in a bad light.
| A．abuse | B．addict |
| C．care | D．ease |
He was passionately addicted to ________ to pop music.
| A．listen | B．listens |
| C．listened | D．listening |
Don't ________ your troubles too often.
| A．speak | B．tell |
| C．air | D．ask |
The incomes of skilled workers went up. __________，unskilled workers saw their earnings fall.
| A．Moreover | B．Therefore |
| C．Meanwhile | D．Otherwise |
________ all of them are strong candidates, only one will be chosen for the post.
| A．Since | B．While |
| C．If | D．As |