It is______ that he has been addicted to the drugs and has difficulty quitting it.
| A．obviously | B．apparently | C．possibly | D．likely |
She walked home by herself at night, _____ she knew that it was dangerous.
| A．once | B．as | C．unless | D．although |
We _____ close friends since we got to know each other in 2006, and we always keep in touch.
| A．were | B．have been | C．will be | D．had been |
I _____ some knowledge of cooking just by watching my mother doing it.
| A．put up | B．looked up | C．picked up | D．set up |
Tom’s mother bought quite a lot of things online but spent only $20 _____.
| A．in order | B．in a word | C．in all | D．in conclusion |
Either you or I _____ going to attend the meeting in the afternoon.
| A．are | B．am | C．is | D．will |