We work together to achieve our common purpose：_________world that is safer, cleaner and healthier than one we found．
| A．the；the | B．a；不填 | C．a；the | D．the；不填 |
-- The scarf is nice, but the price is a little bit high.
--_______, but if you want high quality scarfs, you have to pay more.
| A．No wonder | B．No doubt |
| C．No offence | D．No problem |
________to caring for an Ebola(埃博拉) patient, the nurse who found herself also infected, feeling hopeless.
| A．Devoting | B．Devoted |
| C．Having devoted | D．To devote |
--I failed in the college entrance exam. Sorry to disappoint you.
--_________? You’ve studied so hard.
| A．So what | B．Why not |
| C．Who knows | D．How come |
--You are not angry then?
-- _____. I’ve never laughed so much in my life.
| A．Far from it | B．I hope so |
| C．I’d rather not | D．I’m not sure |
He got into the old truck and off _____ to one of the far corners of the farm to fix the fences.
| A．did they rush | B．they did rush |
| C．they rushed | D．rushed they |