一What is it ? 一 black and yellow.
| A．color; They are | B．colors; It’s |
| C．color; It’s | D．colors; They are |
The situation will become worse and worse ________ the government takes actions to protect the environment.
| A．if | B．unless |
| C．though | D．until |
—Excuse me, madam! Could you tell me when the last bus will leave?
--Sorry, the last bus __________ for ten minutes.
| A．left | B．has left |
| C．has been away | D．will leave |
Look! The building is on fire. Let’s help them to _________ it ________.
| A．work; out | B．give; out |
| C．put; out | D．take; out |
—Look! There’s still so much food left.
--Why not _________ it? We can have it for dinner.
| A．pack | B．throw |
| C．leave | D．finish |
You can’t drive your car on the path because it’s ______ designed for Bus Rapid Transit（快速公交）.
| A．properly | B．normally |
| C．gradually | D．specially |