--- Whose backpack is this?
--- It be Mary’s. She is looking for hers.
| A．can | B．must | C．may | D．can’t |
She bought a skate board online _____ she saved a lot of time.
| A．so that | B．as soon as | C．such that | D．in order to |
If we travel a short distance, we should walk _____ taking a bus. Then we’ll be greener people.
| A．instead of | B．rather | C．while | D．but |
Students ought _____ the truth.
| A．to tell | B．tell | C．telling | D．told |
—It’s a long story, but you can hardly find new words in it.
—Good! _____ it will be too hard for children.
| A．So | B．And | C．But | D．Or |
Mike will go abroad tomorrow. I am going to _____ at the airport.
| A．sent him off | B．saw him off | C．see off | D．see him off |