Emergency line operators must always calm and make sure that they get all the information they need to send help.
| A．grow |
| B．appear |
| C．become |
| D．stay |
—Congratulations！I hear you’ve won the first prize in the singing competition．—You _____ be mistaken．I’m in the dance class．
| A．must | B．may | C．should | D．could |
She doesn’t speak our language, _____ she seems to understand what we say．
| A．for | B．and | C．yet | D．or |
Oh！I can feel something _____ up my leg！It must be an insect．
| A．to climb | B．climbing |
| C．climb | D．climbed |
Studies show that people who have a glass of wine per day do better than _____ who don’t．
| A．that | B．the one |
| C．ones | D．those |
I will wait _____ 6：30, but then I’m going home．
| A．from | B．at | C．after | D．until |