Many people would rather ___________ at home than __________ outdoors because of the smog（雾霾）.
| A．staying; exercise | B．stay; exercising |
| C．stay; exercise | D．to stay; to exercise |
-- Jim, I didn’t see you at Tina’s party last night.
--Tina’s party? I ____________ to her party at all.
| A．didn’t invite | B．wasn’t invited |
| C．haven’t invited | D．won’t be invited |
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 |