---It is selfless ______ the doctor to devote all the time he had ________ for the patients.
--I think so, they are so great.
| A．for; to care | B．of; to care | C．of; to caring | D．for; to caring |
— What do you think of Mary’s dress?
— I think it still looks quite fashionable on her it is a style of many years ago.
| A．though | B．unless |
| C．until | D．because |
Go downstairs, stand in line on the playground as soon as possible.
| A．and | B．but | C．so | D．or |
The mobile phone has changed people’s life a lot ________ it was invented.
| A．until | B．since | C．before | D．after |
—I can hardly believe my eyes. Is that you, Lucy?
—Yes. It has been almost 20 years ______ we were together.
| A．since | B．before | C．after | D．Until |
______ you read it, you can’t imagine how moving the story is.
| A．Unless | B．Because | C．Although | D．But |