His appearance has changed so much that you _____ not recognize him.
| A．must | B．need | C．may | D．ought |
Traditionally，college students hold a graduation ceremony to encourage themselves before they________on their life journey. (2013·安徽，26)
| A．give up | B．settle down |
| C．get through | D．set off |
Sam ________ some knowledge of the computer just by watching others working on it.
| A．brought up | B．looked up |
| C．picked up | D．set up |
I have ________ everything that happened，as I remember it.
| A．set off | B．set on |
| C．set out | D．set down |
We have very strict quality control and anything imperfect is________，so customers feel secure about our products.
| A．denied | B．rejected |
| C．deserted | D．refused |
A good speaker is supposed to manage to ________ the listeners what he means.
| A．make sense to | B．get across to |
| C．appeal to | D．attach to |