If we can keep _____ this speed, we'll arrive there in two or three hours.
| A．on | B．to | C．up | D．at |
Many things that were once considered useful and _____, for example, tobacco, is now thought harmful.
| A．beneficial | B．suitable | C．fulfilling | D．accessible |
Since time is limited, let’s cut _____ the unimportant details.
| A．off | B．away | C．up | D．out |
—Mum, I’m going to take my driving test tomorrow.
—_____ I’m sure you will pass it.
| A．Congratulations! | B．Well done! | C．Indeed! | D．Good luck! |
It’s necessary for you to _____ at least an hour each day to learn the new vocabulary.
| A．set off | B．set out | C．set aside | D．set down |
—I have to ask a(n) _____ of you because the luggage is too heavy for me.
—Oh, with pleasure.
| A．satisfaction | B．bonus | C．assessment | D．favor |